CompareInfo.LastIndexOf Methode

Referenz

Definition

Namespace:: System.Globalization

Assembly:: System.Globalization.dll

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Wichtig

Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.

Gibt den nullbasierten Index des letzten Vorkommens eines Werts in einer Zeichenfolge bzw. in einem Teil dieser Zeichenfolge zurück.

Überlädt

LastIndexOf(String, String, Int32, Int32, CompareOptions)	Sucht mithilfe des angegebenen CompareOptions-Werts nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.
LastIndexOf(String, Char, Int32, Int32, CompareOptions)	Sucht mithilfe des angegebenen CompareOptions-Werts nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.
LastIndexOf(String, String, Int32, Int32)	Sucht nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.
LastIndexOf(String, String, Int32, CompareOptions)	Sucht mithilfe des angegebenen CompareOptions-Werts nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.
LastIndexOf(String, Char, Int32, Int32)	Sucht nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.
LastIndexOf(String, Char, Int32, CompareOptions)	Sucht mithilfe des angegebenen CompareOptions-Werts nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.
LastIndexOf(ReadOnlySpan<Char>, ReadOnlySpan<Char>, CompareOptions, Int32)	Sucht nach dem letzten Vorkommen einer Teilzeichenfolge innerhalb einer Quellzeichenfolge.
LastIndexOf(String, Char)	Sucht nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.
LastIndexOf(String, String, CompareOptions)	Sucht mithilfe des angegebenen CompareOptions-Werts nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.
LastIndexOf(String, Char, Int32)	Sucht nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.
LastIndexOf(String, Char, CompareOptions)	Sucht mithilfe des angegebenen CompareOptions-Werts nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.
LastIndexOf(ReadOnlySpan<Char>, Rune, CompareOptions)	Sucht nach dem letzten Vorkommen einer Rune-Struktur innerhalb der angegebenen schreibgeschützten Zeichenspanne.
LastIndexOf(ReadOnlySpan<Char>, ReadOnlySpan<Char>, CompareOptions)	Sucht nach dem letzten Vorkommen einer Teilzeichenfolge innerhalb der angegebenen schreibgeschützten Zeichenspanne.
LastIndexOf(String, String)	Sucht nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.
LastIndexOf(String, String, Int32)	Sucht nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.

LastIndexOf(String, String, Int32, Int32, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht mithilfe des angegebenen CompareOptions-Werts nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.

public:
 virtual int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex, int count, System::Globalization::CompareOptions options);

public:
 int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex, int count, System::Globalization::CompareOptions options);

public virtual int LastIndexOf (string source, string value, int startIndex, int count, System.Globalization.CompareOptions options);

public int LastIndexOf (string source, string value, int startIndex, int count, System.Globalization.CompareOptions options);

abstract member LastIndexOf : string * string * int * int * System.Globalization.CompareOptions -> int
override this.LastIndexOf : string * string * int * int * System.Globalization.CompareOptions -> int

member this.LastIndexOf : string * string * int * int * System.Globalization.CompareOptions -> int

Public Overridable Function LastIndexOf (source As String, value As String, startIndex As Integer, count As Integer, options As CompareOptions) As Integer

Public Function LastIndexOf (source As String, value As String, startIndex As Integer, count As Integer, options As CompareOptions) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: String

Die Zeichenfolge, die in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

count: Int32

Die Anzahl der Elemente im zu durchsuchenden Abschnitt.

options: CompareOptions

Ein Wert, der definiert, wie source und value verglichen werden sollen. options ist entweder der allein verwendete Enumerationswert Ordinal oder a bitweise Kombination eines oder mehrerer der folgenden Werte: IgnoreCase, IgnoreSymbols, IgnoreNonSpace, IgnoreWidth und IgnoreKanaType.

Gibt zurück

Int32

Der nullbasierte Index des mithilfe der angegebenen Vergleichsoptionen gesuchten letzten Vorkommens von value in dem Abschnitt von source, der die durch count angegebene Anzahl von Elementen enthält und bei startIndex endet, sofern gefunden, andernfalls -1. Gibt startIndex zurück, wenn value ein ignorierbares Zeichen ist.

Ausnahmen

ArgumentNullException

source ist null.

- oder -

value ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

- oder -

count ist kleiner als Null.

- oder -

startIndex und count geben keinen gültigen Abschnitt im source an.

ArgumentException

options enthält einen ungültigen CompareOptions-Wert.

Beispiele

Im folgenden Beispiel werden die Indizes der ersten und letzten Vorkommen eines Zeichens oder einer Teilzeichenfolge innerhalb eines Teils einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 8;
   
   // iL is the length of the substring.
   int iL = 18;
   
   // myT1 and myT2 are the strings used for padding.
   String^ myT1 = gcnew String( '-',iS );
   String^ myT2;
   
   // Searches for the ligature Ã†.
   String^ myStr = "Is AE or ae the same as Ã† or Ã¦?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

Original      : Is AE or ae the same as Ã† or Ã¦?
No options    : -------- ae the same as Ã† -----
           AE :                         b
           ae :          b
            Ã† :                         b
            Ã¦ :          b
Ordinal       : -------- ae the same as Ã† -----
           AE :
           ae :          b
            Ã† :                         b
            Ã¦ :
IgnoreCase    : -------- ae the same as Ã† -----
           AE :          f              l
           ae :          f              l
            Ã† :          f              l
            Ã¦ :          f              l

Original      : Is U" or u" the same as Ãœ or Ã¼?
No options    : -------- u" the same as Ãœ -----
           U" :                         b
           u" :          b
            Ãœ :                         b
            Ã¼ :          b
Ordinal       : -------- u" the same as Ãœ -----
           U" :
           u" :          b
            Ãœ :                         b
            Ã¼ :
IgnoreCase    : -------- u" the same as Ãœ -----
           U" :          f              l
           u" :          f              l
            Ãœ :          f              l
            Ã¼ :          f              l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 8;
      // iL is the length of the substring.
      int iL = 18;
      // myT1 and myT2 are the strings used for padding.
      String myT1 = new String( '-', iS );
      String myT2;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

Original      : Is AE or ae the same as Æ or æ?
No options    : -------- ae the same as Æ -----
           AE :                         b
           ae :          b
            Æ :                         b
            æ :          b
Ordinal       : -------- ae the same as Æ -----
           AE :
           ae :          b
            Æ :                         b
            æ :
IgnoreCase    : -------- ae the same as Æ -----
           AE :          f              l
           ae :          f              l
            Æ :          f              l
            æ :          f              l

Original      : Is U" or u" the same as Ü or ü?
No options    : -------- u" the same as Ü -----
           U" :                         b
           u" :          b
            Ü :                         b
            ü :          b
Ordinal       : -------- u" the same as Ü -----
           U" :
           u" :          b
            Ü :                         b
            ü :
IgnoreCase    : -------- u" the same as Ü -----
           U" :          f              l
           u" :          f              l
            Ü :          f              l
            ü :          f              l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 8
      ' iL is the length of the substring.
      Dim iL As Integer = 18
      ' myT1 and myT2 are the strings used for padding.
      Dim myT1 As New [String]("-"c, [iS])
      Dim myT2 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------- ae the same as Æ -----
'           AE :                         b
'           ae :          b
'            Æ :                         b
'            æ :          b
'Ordinal       : -------- ae the same as Æ -----
'           AE :
'           ae :          b
'            Æ :                         b
'            æ :
'IgnoreCase    : -------- ae the same as Æ -----
'           AE :          f              l
'           ae :          f              l
'            Æ :          f              l
'            æ :          f              l
'
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------- u" the same as Ü -----
'           U" :                         b
'           u" :          b
'            Ü :                         b
'            ü :          b
'Ordinal       : -------- u" the same as Ü -----
'           U" :
'           u" :          b
'            Ü :                         b
'            ü :
'IgnoreCase    : -------- u" the same as Ü -----
'           U" :          f              l
'           u" :          f              l
'            Ü :          f              l
'            ü :          f              l

Hinweise

Die Quellzeichenfolge wird rückwärts durchsucht, beginnend bei startIndex + 1 und endend - startIndexcount.

Der CompareOptions.StringSort Wert ist für diese Methode ungültig.

Wenn options der Ordinal Wert nicht enthalten ist, führt diese Überladung eine kultursensible Suche aus. Ein Unicode-Wert, der ein vorkompiliertes Zeichen darstellt, z. B. die Ligatur "Æ" (U+00C6), kann je nach Kultur als Äquivalent zu jedem Vorkommen der Zeichenkomponenten in der richtigen Sequenz wie "AE" (U+0041, U+0045) betrachtet werden. Wenn options der Ordinal Wert eingeschlossen wird, führt diese Überladung eine Ordnungssuche (kulturunabhängig) durch, bei der die Unicode-Werte verglichen werden.

Hinweis

Wenn möglich, sollten Sie Zeichenfolgenvergleichsmethoden aufrufen, die über einen Parameter vom Typ CompareOptions verfügen, um die art des erwarteten Vergleichs anzugeben. Verwenden Sie in der Regel linguistische Optionen (unter Verwendung der aktuellen Kultur), um Zeichenfolgen zu vergleichen, die auf der Benutzeroberfläche angezeigt werden, und geben Sie CompareOptions.Ordinal oder CompareOptions.OrdinalIgnoreCase für Sicherheitsvergleiche an.

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kultursensiblen Sortierung nicht berücksichtigt werden. Bei einer kulturabhängige Suche (das heißt, wenn options nicht Ordinal oder OrdinalIgnoreCase ist), bei der value ein ignorierbares Zeichen enthält, ist das Ergebnis das gleiche wie bei einer Suche ohne dieses Zeichen. Wenn value nur ein oder mehrere ignorierbare Zeichen bestehen, gibt die LastIndexOf(String, String, Int32, Int32, CompareOptions) Methode immer die Zeichenposition zurück startIndex, an der die Suche beginnt.

Im folgenden Beispiel wird die LastIndexOf(String, String, Int32, Int32, CompareOptions) -Methode verwendet, um die Position eines weichen Bindestrichs (U+00AD) gefolgt von einem "m" in allen, aber der ersten Zeichenposition vor dem endgültigen "m" in zwei Zeichenfolgen zu ermitteln. Nur eine der Zeichenfolgen enthält die erforderliche Teilzeichenfolge. Da der bedingte Bindestrich ein ignorierbares Zeichen ist, gibt die Methode in beiden Fällen den Index "m" in der Zeichenfolge zurück, wenn ein kulturabhängiger Vergleich ausgeführt wird. Wenn sie jedoch einen Ordnungsvergleich durchführt, wird die Teilzeichenfolge nur in der ersten Zeichenfolge gefunden. Beachten Sie, dass im Fall der ersten Zeichenfolge, die den weichen Bindestrich gefolgt von einem "m" enthält, die Methode nicht den Index des weichen Bindestrichs zurückgibt, sondern stattdessen den Index des "m" zurückgibt, wenn sie einen kulturabhängigen Vergleich durchführt. Die Methode gibt den Index des bedingten Bindestrichs in der ersten Zeichenfolge nur dann zurück, wenn sie einen Ordinalvergleich ausführt.

Imports System.Globalization

Public Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo

      Dim searchString As String = ChrW(&h00AD) + "m"
      Dim s1 As String = "ani" + ChrW(&h00AD) + "m" 
      Dim s2 As String = "animal"
      Dim position As Integer

      position = ci.LastIndexOf(s1, "m"c)
      If position >= 1 Then
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, position, CompareOptions.None))
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, position, CompareOptions.Ordinal))
      End If      
      
      position = ci.LastIndexOf(s2, "m"c)
      If position >= 1 Then 
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, position, CompareOptions.None))
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, position, CompareOptions.Ordinal))
      End If
   End Sub
End Module
' The example displays the following output:
'       4
'       3
'       3
'       -1

Weitere Informationen

Gilt für:

LastIndexOf(String, Char, Int32, Int32, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht mithilfe des angegebenen CompareOptions-Werts nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.

public:
 virtual int LastIndexOf(System::String ^ source, char value, int startIndex, int count, System::Globalization::CompareOptions options);

public:
 int LastIndexOf(System::String ^ source, char value, int startIndex, int count, System::Globalization::CompareOptions options);

public virtual int LastIndexOf (string source, char value, int startIndex, int count, System.Globalization.CompareOptions options);

public int LastIndexOf (string source, char value, int startIndex, int count, System.Globalization.CompareOptions options);

abstract member LastIndexOf : string * char * int * int * System.Globalization.CompareOptions -> int
override this.LastIndexOf : string * char * int * int * System.Globalization.CompareOptions -> int

member this.LastIndexOf : string * char * int * int * System.Globalization.CompareOptions -> int

Public Overridable Function LastIndexOf (source As String, value As Char, startIndex As Integer, count As Integer, options As CompareOptions) As Integer

Public Function LastIndexOf (source As String, value As Char, startIndex As Integer, count As Integer, options As CompareOptions) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: Char

Das Zeichen, das in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

count: Int32

Die Anzahl der Elemente im zu durchsuchenden Abschnitt.

options: CompareOptions

Gibt zurück

Int32

Ausnahmen

ArgumentNullException

source ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

- oder -

count ist kleiner als Null.

- oder -

startIndex und count geben keinen gültigen Abschnitt im source an.

ArgumentException

options enthält einen ungültigen CompareOptions-Wert.

Beispiele

Im folgenden Beispiel werden die Indizes der ersten und letzten Vorkommen eines Zeichens oder einer Teilzeichenfolge innerhalb eines Teils einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 8;
   
   // iL is the length of the substring.
   int iL = 18;
   
   // myT1 and myT2 are the strings used for padding.
   String^ myT1 = gcnew String( '-',iS );
   String^ myT2;
   
   // Searches for the ligature Ã†.
   String^ myStr = "Is AE or ae the same as Ã† or Ã¦?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

Original      : Is AE or ae the same as Ã† or Ã¦?
No options    : -------- ae the same as Ã† -----
           AE :                         b
           ae :          b
            Ã† :                         b
            Ã¦ :          b
Ordinal       : -------- ae the same as Ã† -----
           AE :
           ae :          b
            Ã† :                         b
            Ã¦ :
IgnoreCase    : -------- ae the same as Ã† -----
           AE :          f              l
           ae :          f              l
            Ã† :          f              l
            Ã¦ :          f              l

Original      : Is U" or u" the same as Ãœ or Ã¼?
No options    : -------- u" the same as Ãœ -----
           U" :                         b
           u" :          b
            Ãœ :                         b
            Ã¼ :          b
Ordinal       : -------- u" the same as Ãœ -----
           U" :
           u" :          b
            Ãœ :                         b
            Ã¼ :
IgnoreCase    : -------- u" the same as Ãœ -----
           U" :          f              l
           u" :          f              l
            Ãœ :          f              l
            Ã¼ :          f              l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 8;
      // iL is the length of the substring.
      int iL = 18;
      // myT1 and myT2 are the strings used for padding.
      String myT1 = new String( '-', iS );
      String myT2;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

Original      : Is AE or ae the same as Æ or æ?
No options    : -------- ae the same as Æ -----
           AE :                         b
           ae :          b
            Æ :                         b
            æ :          b
Ordinal       : -------- ae the same as Æ -----
           AE :
           ae :          b
            Æ :                         b
            æ :
IgnoreCase    : -------- ae the same as Æ -----
           AE :          f              l
           ae :          f              l
            Æ :          f              l
            æ :          f              l

Original      : Is U" or u" the same as Ü or ü?
No options    : -------- u" the same as Ü -----
           U" :                         b
           u" :          b
            Ü :                         b
            ü :          b
Ordinal       : -------- u" the same as Ü -----
           U" :
           u" :          b
            Ü :                         b
            ü :
IgnoreCase    : -------- u" the same as Ü -----
           U" :          f              l
           u" :          f              l
            Ü :          f              l
            ü :          f              l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 8
      ' iL is the length of the substring.
      Dim iL As Integer = 18
      ' myT1 and myT2 are the strings used for padding.
      Dim myT1 As New [String]("-"c, [iS])
      Dim myT2 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------- ae the same as Æ -----
'           AE :                         b
'           ae :          b
'            Æ :                         b
'            æ :          b
'Ordinal       : -------- ae the same as Æ -----
'           AE :
'           ae :          b
'            Æ :                         b
'            æ :
'IgnoreCase    : -------- ae the same as Æ -----
'           AE :          f              l
'           ae :          f              l
'            Æ :          f              l
'            æ :          f              l
'
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------- u" the same as Ü -----
'           U" :                         b
'           u" :          b
'            Ü :                         b
'            ü :          b
'Ordinal       : -------- u" the same as Ü -----
'           U" :
'           u" :          b
'            Ü :                         b
'            ü :
'IgnoreCase    : -------- u" the same as Ü -----
'           U" :          f              l
'           u" :          f              l
'            Ü :          f              l
'            ü :          f              l

Hinweise

Die Quellzeichenfolge wird rückwärts durchsucht, beginnend bei startIndex + 1 und endend - startIndexcount.

Der CompareOptions.StringSort Wert ist für diese Methode ungültig.

Wenn options der Ordinal Wert nicht enthalten ist, führt diese Überladung eine kultursensible Suche aus. Wenn es sich bei dem Zeichen um einen Unicode-Wert handelt, der ein vorkompiliertes Zeichen darstellt, z. B. die Ligatur "Æ" (U+00C6), kann es je nach Kultur als äquivalent zu jedem Vorkommen seiner Komponenten in der richtigen Sequenz wie "AE" (U+0041, U+0045) betrachtet werden. Wenn options der Ordinal Wert eingeschlossen ist, führt diese Überladung eine Ordnungssuche (kulturunabhängig) durch. Ein Zeichen gilt nur dann als äquivalent zu einem anderen Zeichen, wenn die Unicode-Werte identisch sind. Überladungen dieser String.LastIndexOf Suche nach einem Zeichen führen eine Ordnungssuche durch, während diejenigen, die nach einer Zeichenfolge suchen, eine kultursensitive Suche ausführen.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kultursensiblen Sortierung nicht berücksichtigt werden. Wenn es sich bei einer kultursensiblen Suche value um ein ignorierbares Zeichen handelt, entspricht das Ergebnis der Suche mit entferntem Zeichen. In diesem Fall gibt die LastIndexOf(String, Char, Int32, Int32, CompareOptions) -Methode immer die Zeichenposition zurück startIndex, an der die Suche beginnt. Im folgenden Beispiel wird die LastIndexOf(String, Char, Int32, Int32, CompareOptions) -Methode verwendet, um einen weichen Bindestrich (U+00AD) zu finden, der dem endgültigen "m" in zwei Zeichenfolgen vorangestellt ist. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. In beiden Fällen gibt eine kultursensible Suche die Indexposition von "m" zurück, da der weiche Bindestrich ein ignorierbares startIndexZeichen ist. Eine Ordnungssuche findet jedoch erfolgreich den weichen Bindestrich in einer Zeichenfolge und meldet, dass er in der zweiten Zeichenfolge nicht vorhanden ist.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      int position = 0;

      // Find the index of the soft hyphen using culture-sensitive comparison.
      position = ci.LastIndexOf(s1, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', position,
                           position + 1, CompareOptions.IgnoreCase));

      position = ci.LastIndexOf(s2, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', position,
                           position + 1, CompareOptions.IgnoreCase));

      // Find the index of the soft hyphen using ordinal comparison.
      position = ci.LastIndexOf(s1, 'm');
      Console.WriteLine("'m' at position {0}", position, CompareOptions.Ordinal);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', position,
                           position + 1, CompareOptions.Ordinal));

      position = ci.LastIndexOf(s2, 'm');
      Console.WriteLine("'m' at position {0}", position, CompareOptions.Ordinal);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', position,
                           position + 1, CompareOptions.Ordinal));
   }
}
// The example displays the following output:
//       'm' at position 4
//       4
//       'm' at position 3
//       3
//       'm' at position 4
//       3
//       'm' at position 3
//       -1

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim softHyphen As Char = ChrW(&h00AD)
      Dim position As Integer
      
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the index of the soft hyphen using culture-sensitive comparison.
      position = ci.LastIndexOf(s1, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen, position, _
                           position + 1, CompareOptions.IgnoreCase))
      End If
      
      position = ci.LastIndexOf(s2, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen, position, _
                           position + 1, CompareOptions.IgnoreCase))
      End If  
       
      ' Find the index of the soft hyphen using ordinal comparison.
      position = ci.LastIndexOf(s1, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen, position, _
                           position + 1, CompareOptions.Ordinal))
      End If
      
      position = ci.LastIndexOf(s2, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen, position, _
                           position + 1, CompareOptions.Ordinal))
      End If   
   End Sub
End Module
' The example displays the following output:
'       'm' at position 4
'       4
'       'm' at position 3
'       3
'       'm' at position 4
'       3
'       'm' at position 3
'       -1

Weitere Informationen

Gilt für:

LastIndexOf(String, String, Int32, Int32)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.

public:
 virtual int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex, int count);

public:
 int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex, int count);

public virtual int LastIndexOf (string source, string value, int startIndex, int count);

public int LastIndexOf (string source, string value, int startIndex, int count);

abstract member LastIndexOf : string * string * int * int -> int
override this.LastIndexOf : string * string * int * int -> int

member this.LastIndexOf : string * string * int * int -> int

Public Overridable Function LastIndexOf (source As String, value As String, startIndex As Integer, count As Integer) As Integer

Public Function LastIndexOf (source As String, value As String, startIndex As Integer, count As Integer) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: String

Die Zeichenfolge, die in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

count: Int32

Die Anzahl der Elemente im zu durchsuchenden Abschnitt.

Gibt zurück

Int32

Der nullbasierte Index des letzten Vorkommens von value in dem Abschnitt von source, der die durch count angegebene Anzahl von Elementen enthält und bei startIndex endet, sofern gefunden, andernfalls -1. Gibt startIndex zurück, wenn value ein ignorierbares Zeichen ist.

Ausnahmen

ArgumentNullException

source ist null.

- oder -

value ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

- oder -

count ist kleiner als Null.

- oder -

startIndex und count geben keinen gültigen Abschnitt im source an.

Beispiele

Im folgenden Beispiel werden die Indizes des ersten und letzten Vorkommens eines Zeichens oder einer Teilzeichenfolge in einem Teil einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 8;
   
   // iL is the length of the substring.
   int iL = 18;
   
   // myT1 and myT2 are the strings used for padding.
   String^ myT1 = gcnew String( '-',iS );
   String^ myT2;
   
   // Searches for the ligature Ã†.
   String^ myStr = "Is AE or ae the same as Ã† or Ã¦?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

Original      : Is AE or ae the same as Ã† or Ã¦?
No options    : -------- ae the same as Ã† -----
           AE :                         b
           ae :          b
            Ã† :                         b
            Ã¦ :          b
Ordinal       : -------- ae the same as Ã† -----
           AE :
           ae :          b
            Ã† :                         b
            Ã¦ :
IgnoreCase    : -------- ae the same as Ã† -----
           AE :          f              l
           ae :          f              l
            Ã† :          f              l
            Ã¦ :          f              l

Original      : Is U" or u" the same as Ãœ or Ã¼?
No options    : -------- u" the same as Ãœ -----
           U" :                         b
           u" :          b
            Ãœ :                         b
            Ã¼ :          b
Ordinal       : -------- u" the same as Ãœ -----
           U" :
           u" :          b
            Ãœ :                         b
            Ã¼ :
IgnoreCase    : -------- u" the same as Ãœ -----
           U" :          f              l
           u" :          f              l
            Ãœ :          f              l
            Ã¼ :          f              l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 8;
      // iL is the length of the substring.
      int iL = 18;
      // myT1 and myT2 are the strings used for padding.
      String myT1 = new String( '-', iS );
      String myT2;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

Original      : Is AE or ae the same as Æ or æ?
No options    : -------- ae the same as Æ -----
           AE :                         b
           ae :          b
            Æ :                         b
            æ :          b
Ordinal       : -------- ae the same as Æ -----
           AE :
           ae :          b
            Æ :                         b
            æ :
IgnoreCase    : -------- ae the same as Æ -----
           AE :          f              l
           ae :          f              l
            Æ :          f              l
            æ :          f              l

Original      : Is U" or u" the same as Ü or ü?
No options    : -------- u" the same as Ü -----
           U" :                         b
           u" :          b
            Ü :                         b
            ü :          b
Ordinal       : -------- u" the same as Ü -----
           U" :
           u" :          b
            Ü :                         b
            ü :
IgnoreCase    : -------- u" the same as Ü -----
           U" :          f              l
           u" :          f              l
            Ü :          f              l
            ü :          f              l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 8
      ' iL is the length of the substring.
      Dim iL As Integer = 18
      ' myT1 and myT2 are the strings used for padding.
      Dim myT1 As New [String]("-"c, [iS])
      Dim myT2 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------- ae the same as Æ -----
'           AE :                         b
'           ae :          b
'            Æ :                         b
'            æ :          b
'Ordinal       : -------- ae the same as Æ -----
'           AE :
'           ae :          b
'            Æ :                         b
'            æ :
'IgnoreCase    : -------- ae the same as Æ -----
'           AE :          f              l
'           ae :          f              l
'            Æ :          f              l
'            æ :          f              l
'
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------- u" the same as Ü -----
'           U" :                         b
'           u" :          b
'            Ü :                         b
'            ü :          b
'Ordinal       : -------- u" the same as Ü -----
'           U" :
'           u" :          b
'            Ü :                         b
'            ü :
'IgnoreCase    : -------- u" the same as Ü -----
'           U" :          f              l
'           u" :          f              l
'            Ü :          f              l
'            ü :          f              l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend bei startIndex und endet bei startIndex - count + 1.

Diese Überladung führt eine kulturabhängige Suche aus. Ein Unicode-Wert, der ein vorkompiliertes Zeichen darstellt, z. B. die Ligatur "Æ" (U+00C6), kann je nach Kultur als äquivalent zu jedem Vorkommen der Zeichenkomponenten in der richtigen Sequenz betrachtet werden, z. B. "AE" (U+0041, U+0045). Um eine Ordinalsuche (kulturunabhängig) durchzuführen, bei der die Unicode-Werte verglichen werden, sollten Sie eine der Überladungen mit einem Parameter vom Typ CompareOptions aufrufen und den Ordinal Wert verwenden.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Bei einer kulturabhängige Suche, bei der value ein ignorierbares Zeichen enthält, ist das Ergebnis das gleiche wie bei einer Suche ohne dieses Zeichen. Wenn value nur aus einem oder mehreren ignorierbaren Zeichen besteht, gibt startIndexdie LastIndexOf(String, String, Int32, Int32) Methode immer zurück. Dies ist die Zeichenposition, an der die Suche beginnt.

Im folgenden Beispiel wird die LastIndexOf(String, String, Int32, Int32) -Methode verwendet, um die Position eines weichen Bindestrichs (U+00AD) zu ermitteln, gefolgt von einem "m" in den drei Zeichen, die dem endgültigen "m" von zwei Zeichenfolgen vorangehen. Nur eine der Zeichenfolgen enthält die erforderliche Teilzeichenfolge. Da der bedingte Bindestrich ein ignorierbares Zeichen ist, gibt die Methode in beiden Fällen den Index "m" in der Zeichenfolge zurück, wenn ein kulturabhängiger Vergleich ausgeführt wird. Beachten Sie, dass bei der ersten Zeichenfolge, die den bedingten Bindestrich gefolgt von einem "m" umfasst, die Methode den Index des bedingten Bindestrichs nicht zurückgeben kann, sondern stattdessen den Index des "m" zurückgibt.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string searchString = "\u00ADm";
      string s1 = "ani\u00ADmal" ;
      string s2 = "animal";
      int position;

      position = ci.LastIndexOf(s1, 'm');
      if (position >= 0) {
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, 3, CompareOptions.None));
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, 3, CompareOptions.Ordinal));
      }

      position = ci.LastIndexOf(s2, 'm');
      if (position >= 0) {
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, 3, CompareOptions.None));
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, 3, CompareOptions.Ordinal));
      }
   }
}
// The example displays the following output:
//       4
//       3
//       3
//       -1

Imports System.Globalization

Public Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo

      Dim searchString As String = ChrW(&h00AD) + "m"
      Dim s1 As String = "ani" + ChrW(&h00AD) + "mal" 
      Dim s2 As String = "animal"
      Dim position As Integer

      position = ci.LastIndexOf(s1, "m"c)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, 3, CompareOptions.None))
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, 3, CompareOptions.Ordinal))
      End If
      
      position = ci.LastIndexOf(s2, "m"c)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, 3, CompareOptions.None))
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, 3, CompareOptions.Ordinal))
      End If
   End Sub
End Module
' The example displays the following output:
'       4
'       3
'       3
'       -1

Weitere Informationen

IndexOf(String, Char)

Gilt für:

LastIndexOf(String, String, Int32, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht mithilfe des angegebenen CompareOptions-Werts nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.

public:
 virtual int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex, System::Globalization::CompareOptions options);

public:
 int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex, System::Globalization::CompareOptions options);

public virtual int LastIndexOf (string source, string value, int startIndex, System.Globalization.CompareOptions options);

public int LastIndexOf (string source, string value, int startIndex, System.Globalization.CompareOptions options);

abstract member LastIndexOf : string * string * int * System.Globalization.CompareOptions -> int
override this.LastIndexOf : string * string * int * System.Globalization.CompareOptions -> int

member this.LastIndexOf : string * string * int * System.Globalization.CompareOptions -> int

Public Overridable Function LastIndexOf (source As String, value As String, startIndex As Integer, options As CompareOptions) As Integer

Public Function LastIndexOf (source As String, value As String, startIndex As Integer, options As CompareOptions) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: String

Die Zeichenfolge, die in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

options: CompareOptions

Gibt zurück

Int32

Der nullbasierte Index des mithilfe der angegebenen Vergleichsoptionen gesuchten letzten Vorkommens von value in dem Abschnitt von source, der sich vom Anfang von source bis startIndex erstreckt, sofern gefunden, andernfalls -1. Gibt startIndex zurück, wenn value ein ignorierbares Zeichen ist.

Ausnahmen

ArgumentNullException

source ist null.

- oder -

value ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

ArgumentException

options enthält einen ungültigen CompareOptions-Wert.

Beispiele

Im folgenden Beispiel werden die Indizes des ersten und letzten Vorkommens eines Zeichens oder einer Teilzeichenfolge in einem Teil einer Zeichenfolge bestimmt. Beachten Sie, dass IndexOf und LastIndexOf in verschiedenen Teilen der Zeichenfolge suchen, auch mit demselben startIndex Parameter.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 20;
   
   // myT1 is the string used for padding.
   String^ myT1;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 20;
      // myT1 is the string used for padding.
      String myT1;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 20
      ' myT1 is the string used for padding.
      Dim myT1 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS]), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS]), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS]), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS]))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS]))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS]))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.Ordinal))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.Ordinal))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS]), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS]))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS]))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS]))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))
      
      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'IndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                              f
'            Æ :                         f
'            æ :                              f
'Ordinal       : -------------------- as Æ or æ?
'           AE :
'           ae :
'            Æ :                         f
'            æ :                              f
'IgnoreCase    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                         f
'            Æ :                         f
'            æ :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :    l
'            æ :          l
'Ordinal       : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :
'            æ :
'IgnoreCase    : Is AE or ae the same ----------
'           AE :          l
'           ae :          l
'            Æ :          l
'            æ :          l
'
'IndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                              f
'            Ü :                         f
'            ü :                              f
'Ordinal       : -------------------- as Ü or ü?
'           U" :
'           u" :
'            Ü :                         f
'            ü :                              f
'IgnoreCase    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                         f
'            Ü :                         f
'            ü :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :    l
'            ü :          l
'Ordinal       : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :
'            ü :
'IgnoreCase    : Is U" or u" the same ----------
'           U" :          l
'           u" :          l
'            Ü :          l
'            ü :          l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am startIndex Anfang und endend am Anfang der Zeichenfolge.

Der CompareOptions.StringSort Wert ist für diese Methode ungültig.

Wenn options den Ordinal Wert nicht enthält, führt diese Überladung eine kulturabhängige Suche aus. Ein Unicode-Wert, der ein vorkompiliertes Zeichen darstellt, z. B. die Ligatur "Æ" (U+00C6), kann je nach Kultur als äquivalent zu jedem Vorkommen der Zeichenkomponenten in der richtigen Sequenz betrachtet werden, z. B. "AE" (U+0041, U+0045). Wenn options der Ordinal Wert eingeschlossen wird, führt diese Überladung eine Ordinalsuche (kulturunabhängig) durch, bei der die Unicode-Werte verglichen werden.

Hinweis

Hinweise für Aufrufer

Im folgenden Beispiel wird die LastIndexOf(String, String, Int32, CompareOptions) -Methode verwendet, um die Position eines weichen Bindestrichs (U+00AD) gefolgt von einem "m" zu ermitteln, beginnend mit dem endgültigen "m" in zwei Zeichenfolgen. Nur eine der Zeichenfolgen enthält die erforderliche Teilzeichenfolge. Da der bedingte Bindestrich ein ignorierbares Zeichen ist, gibt die Methode in beiden Fällen den Index "m" in der Zeichenfolge zurück, wenn ein kulturabhängiger Vergleich ausgeführt wird. Beachten Sie, dass bei der ersten Zeichenfolge, die den bedingten Bindestrich gefolgt von einem "m" umfasst, die Methode den Index des bedingten Bindestrichs nicht zurückgeben kann, sondern stattdessen den Index des "m" zurückgibt. Die Methode gibt den Index des bedingten Bindestrichs in der ersten Zeichenfolge nur dann zurück, wenn sie einen Ordinalvergleich ausführt.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string searchString = "\u00ADm";
      string s1 = "ani\u00ADmal" ;
      string s2 = "animal";
      int position;

      position = ci.LastIndexOf(s1, 'm');
      if (position >= 0) {
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, CompareOptions.None));
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, CompareOptions.Ordinal));
      }

      position = ci.LastIndexOf(s2, 'm');
      if (position >= 0) {
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, CompareOptions.None));
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, CompareOptions.Ordinal));
      }
   }
}
// The example displays the following output:
//       4
//       3
//       3
//       -1

Imports System.Globalization

Public Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo

      Dim searchString As String = ChrW(&h00AD) + "m"
      Dim s1 As String = "ani" + ChrW(&h00AD) + "mal" 
      Dim s2 As String = "animal"
      Dim position As Integer

      position = ci.LastIndexOf(s1, "m"c)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, CompareOptions.None))
         Console.WriteLine(ci.LastIndexOf(s1, searchString, position, CompareOptions.Ordinal))
      End If
      
      position = ci.LastIndexOf(s2, "m"c)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, CompareOptions.None))
         Console.WriteLine(ci.LastIndexOf(s2, searchString, position, CompareOptions.Ordinal))
      End If
   End Sub
End Module
' The example displays the following output:
'       4
'       3
'       3
'       -1

Weitere Informationen

Gilt für:

LastIndexOf(String, Char, Int32, Int32)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der die angegebene Anzahl von Elementen enthält und am angegebenen Index endet.

public:
 virtual int LastIndexOf(System::String ^ source, char value, int startIndex, int count);

public:
 int LastIndexOf(System::String ^ source, char value, int startIndex, int count);

public virtual int LastIndexOf (string source, char value, int startIndex, int count);

public int LastIndexOf (string source, char value, int startIndex, int count);

abstract member LastIndexOf : string * char * int * int -> int
override this.LastIndexOf : string * char * int * int -> int

member this.LastIndexOf : string * char * int * int -> int

Public Overridable Function LastIndexOf (source As String, value As Char, startIndex As Integer, count As Integer) As Integer

Public Function LastIndexOf (source As String, value As Char, startIndex As Integer, count As Integer) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: Char

Das Zeichen, das in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

count: Int32

Die Anzahl der Elemente im zu durchsuchenden Abschnitt.

Gibt zurück

Int32

Ausnahmen

ArgumentNullException

source ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

- oder -

count ist kleiner als Null.

- oder -

startIndex und count geben keinen gültigen Abschnitt im source an.

Beispiele

Im folgenden Beispiel werden die Indizes des ersten und letzten Vorkommens eines Zeichens oder einer Teilzeichenfolge in einem Teil einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 8;
   
   // iL is the length of the substring.
   int iL = 18;
   
   // myT1 and myT2 are the strings used for padding.
   String^ myT1 = gcnew String( '-',iS );
   String^ myT2;
   
   // Searches for the ligature Ã†.
   String^ myStr = "Is AE or ae the same as Ã† or Ã¦?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã† : ", myComp->IndexOf( myStr, L'Ã†', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã†', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¦ : ", myComp->IndexOf( myStr, L'Ã¦', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¦', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   myT2 = gcnew String( '-',myStr->Length - iS - iL );
   Console::WriteLine();
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL ) );
   Console::WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr->Substring( iS, iL ), myT2 );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ãœ : ", myComp->IndexOf( myStr, L'Ãœ', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ãœ', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ã¼ : ", myComp->IndexOf( myStr, L'Ã¼', iS, iL, CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ã¼', iS + iL - 1, iL, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

Original      : Is AE or ae the same as Ã† or Ã¦?
No options    : -------- ae the same as Ã† -----
           AE :                         b
           ae :          b
            Ã† :                         b
            Ã¦ :          b
Ordinal       : -------- ae the same as Ã† -----
           AE :
           ae :          b
            Ã† :                         b
            Ã¦ :
IgnoreCase    : -------- ae the same as Ã† -----
           AE :          f              l
           ae :          f              l
            Ã† :          f              l
            Ã¦ :          f              l

Original      : Is U" or u" the same as Ãœ or Ã¼?
No options    : -------- u" the same as Ãœ -----
           U" :                         b
           u" :          b
            Ãœ :                         b
            Ã¼ :          b
Ordinal       : -------- u" the same as Ãœ -----
           U" :
           u" :          b
            Ãœ :                         b
            Ã¼ :
IgnoreCase    : -------- u" the same as Ãœ -----
           U" :          f              l
           u" :          f              l
            Ãœ :          f              l
            Ã¼ :          f              l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 8;
      // iL is the length of the substring.
      int iL = 18;
      // myT1 and myT2 are the strings used for padding.
      String myT1 = new String( '-', iS );
      String myT2;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      myT2 = new String( '-', myStr.Length - iS - iL );
      Console.WriteLine();
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL ) );
      Console.WriteLine( "Ordinal       : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring( iS, iL ), myT2 );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, iL, CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', iS + iL - 1, iL, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

Original      : Is AE or ae the same as Æ or æ?
No options    : -------- ae the same as Æ -----
           AE :                         b
           ae :          b
            Æ :                         b
            æ :          b
Ordinal       : -------- ae the same as Æ -----
           AE :
           ae :          b
            Æ :                         b
            æ :
IgnoreCase    : -------- ae the same as Æ -----
           AE :          f              l
           ae :          f              l
            Æ :          f              l
            æ :          f              l

Original      : Is U" or u" the same as Ü or ü?
No options    : -------- u" the same as Ü -----
           U" :                         b
           u" :          b
            Ü :                         b
            ü :          b
Ordinal       : -------- u" the same as Ü -----
           U" :
           u" :          b
            Ü :                         b
            ü :
IgnoreCase    : -------- u" the same as Ü -----
           U" :          f              l
           u" :          f              l
            Ü :          f              l
            ü :          f              l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 8
      ' iL is the length of the substring.
      Dim iL As Integer = 18
      ' myT1 and myT2 are the strings used for padding.
      Dim myT1 As New [String]("-"c, [iS])
      Dim myT2 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      myT2 = New [String]("-"c, myStr.Length - [iS] - iL)
      Console.WriteLine()
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL))
      Console.WriteLine("Ordinal       : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}{2}", myT1, myStr.Substring([iS], iL), myT2)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], iL, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, [iS] + iL - 1, iL, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------- ae the same as Æ -----
'           AE :                         b
'           ae :          b
'            Æ :                         b
'            æ :          b
'Ordinal       : -------- ae the same as Æ -----
'           AE :
'           ae :          b
'            Æ :                         b
'            æ :
'IgnoreCase    : -------- ae the same as Æ -----
'           AE :          f              l
'           ae :          f              l
'            Æ :          f              l
'            æ :          f              l
'
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------- u" the same as Ü -----
'           U" :                         b
'           u" :          b
'            Ü :                         b
'            ü :          b
'Ordinal       : -------- u" the same as Ü -----
'           U" :
'           u" :          b
'            Ü :                         b
'            ü :
'IgnoreCase    : -------- u" the same as Ü -----
'           U" :          f              l
'           u" :          f              l
'            Ü :          f              l
'            ü :          f              l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend bei startIndex und endet bei startIndex - count + 1.

Diese Überladung führt eine kulturabhängige Suche aus. Wenn es sich bei dem Zeichen um einen Unicode-Wert handelt, der ein vorkompiliertes Zeichen darstellt, z. B. die Ligatur "Æ" (U+00C6), kann es je nach Kultur als äquivalent zu jedem Vorkommen seiner Komponenten in der richtigen Sequenz angesehen werden, z. B. "AE" (U+0041, U+0045). Um eine Ordinalsuche (kulturunabhängig) durchzuführen, bei der ein Zeichen nur dann als äquivalent zu einem anderen Zeichen betrachtet wird, wenn die Unicode-Werte identisch sind, sollten Sie eine der Überladungen aufrufen, die über einen Parameter vom Typ CompareOptions verfügt, und den Ordinal Wert verwenden. Überladungen dieser String.LastIndexOf Suche nach einem Zeichen führen eine Ordnungssuche durch, während diejenigen, die nach einer Zeichenfolge suchen, eine kulturabhängige Suche ausführen.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Wenn bei einer kulturabhängigen Suche value ein ignorables Zeichen ist, entspricht das Ergebnis der Suche mit entferntem Zeichen. In diesem Fall gibt die LastIndexOf(String, Char, Int32, Int32) -Methode immer zurück startIndex. Dies ist die Zeichenposition, an der die Suche beginnt. Im folgenden Beispiel wird die LastIndexOf(String, Char, Int32, Int32) -Methode verwendet, um einen weichen Bindestrich (U+00AD) zu finden, der dem endgültigen "m" in zwei Zeichenfolgen vorangestellt ist. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. Da der weiche Bindestrich in beiden Fällen ein ignorierbares Zeichen ist, gibt die Methode die Indexposition des "m" zurück, was dem Wert von startIndexentspricht.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      int position = 0;

      // Find the index of the soft hyphen.
      position = ci.IndexOf(s1, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', position, position + 1));

      position = ci.IndexOf(s2, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', position, position + 1));
   }
}
// The example displays the following output:
//       'm' at position 4
//       4
//       'm' at position 3
//       3

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim position As Integer
      Dim softHyphen As Char = ChrW(&h00AD)
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the index of the soft hyphen.
      position = ci.IndexOf(s1, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen, position, position + 1))
      End If
      
      position = ci.IndexOf(s2, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen, position, position + 1))
      End If   
   End Sub
End Module
' The example displays the following output:
'       'm' at position 4
'       4
'       'm' at position 3
'       3

Weitere Informationen

IndexOf(String, Char)

Gilt für:

LastIndexOf(String, Char, Int32, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht mithilfe des angegebenen CompareOptions-Werts nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.

public:
 virtual int LastIndexOf(System::String ^ source, char value, int startIndex, System::Globalization::CompareOptions options);

public:
 int LastIndexOf(System::String ^ source, char value, int startIndex, System::Globalization::CompareOptions options);

public virtual int LastIndexOf (string source, char value, int startIndex, System.Globalization.CompareOptions options);

public int LastIndexOf (string source, char value, int startIndex, System.Globalization.CompareOptions options);

abstract member LastIndexOf : string * char * int * System.Globalization.CompareOptions -> int
override this.LastIndexOf : string * char * int * System.Globalization.CompareOptions -> int

member this.LastIndexOf : string * char * int * System.Globalization.CompareOptions -> int

Public Overridable Function LastIndexOf (source As String, value As Char, startIndex As Integer, options As CompareOptions) As Integer

Public Function LastIndexOf (source As String, value As Char, startIndex As Integer, options As CompareOptions) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: Char

Das Zeichen, das in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

options: CompareOptions

Gibt zurück

Int32

Ausnahmen

ArgumentNullException

source ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

ArgumentException

options enthält einen ungültigen CompareOptions-Wert.

Beispiele

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 20;
   
   // myT1 is the string used for padding.
   String^ myT1;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 20;
      // myT1 is the string used for padding.
      String myT1;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 20
      ' myT1 is the string used for padding.
      Dim myT1 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS]), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS]), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS]), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS]))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS]))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS]))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.Ordinal))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.Ordinal))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS]), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS]))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS]))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS]))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))
      
      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'IndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                              f
'            Æ :                         f
'            æ :                              f
'Ordinal       : -------------------- as Æ or æ?
'           AE :
'           ae :
'            Æ :                         f
'            æ :                              f
'IgnoreCase    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                         f
'            Æ :                         f
'            æ :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :    l
'            æ :          l
'Ordinal       : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :
'            æ :
'IgnoreCase    : Is AE or ae the same ----------
'           AE :          l
'           ae :          l
'            Æ :          l
'            æ :          l
'
'IndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                              f
'            Ü :                         f
'            ü :                              f
'Ordinal       : -------------------- as Ü or ü?
'           U" :
'           u" :
'            Ü :                         f
'            ü :                              f
'IgnoreCase    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                         f
'            Ü :                         f
'            ü :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :    l
'            ü :          l
'Ordinal       : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :
'            ü :
'IgnoreCase    : Is U" or u" the same ----------
'           U" :          l
'           u" :          l
'            Ü :          l
'            ü :          l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am startIndex Anfang und endend am Anfang der Zeichenfolge.

Der CompareOptions.StringSort Wert ist für diese Methode ungültig.

Wenn options den Ordinal Wert nicht enthält, führt diese Überladung eine kulturabhängige Suche aus. Wenn es sich bei dem Zeichen um einen Unicode-Wert handelt, der ein vorkompiliertes Zeichen darstellt, z. B. die Ligatur "Æ" (U+00C6), kann es je nach Kultur als äquivalent zu jedem Vorkommen seiner Komponenten in der richtigen Sequenz angesehen werden, z. B. "AE" (U+0041, U+0045). Wenn options der Ordinal Wert eingeschlossen wird, führt diese Überladung eine Ordinalsuche (kulturunabhängig) durch. Ein Zeichen gilt nur dann als gleichwertig mit einem anderen Zeichen, wenn die Unicode-Werte identisch sind. Überladungen dieser String.LastIndexOf Suche nach einem Zeichen führen eine Ordnungssuche durch, während diejenigen, die nach einer Zeichenfolge suchen, eine kulturabhängige Suche ausführen.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Wenn bei einer kulturabhängigen Suche value ein ignorables Zeichen ist, entspricht das Ergebnis der Suche mit entferntem Zeichen. In diesem Fall gibt die LastIndexOf(String, Char, Int32, CompareOptions) -Methode immer zurück startIndex. Dies ist die Zeichenposition, an der die Suche beginnt. Im folgenden Beispiel wird die LastIndexOf(String, Char, Int32, CompareOptions) -Methode verwendet, um einen weichen Bindestrich (U+00AD) zu finden, der dem endgültigen "m" in zwei Zeichenfolgen vorangestellt ist. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. Da der weiche Bindestrich in beiden Fällen ein ignorables Zeichen ist, gibt eine kulturabhängige Suche die Indexposition des "m" zurück. Eine Ordnungszahlsuche findet jedoch erfolgreich den weichen Bindestrich in einer Zeichenfolge und meldet, dass er in der zweiten Zeichenfolge nicht vorhanden ist.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      int position = 0;

      // Find the index of the soft hyphen using culture-sensitive comparison.
      position = ci.LastIndexOf(s1, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', position, CompareOptions.IgnoreCase));

      position = ci.LastIndexOf(s2, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', position, CompareOptions.IgnoreCase));

      // Find the index of the soft hyphen using ordinal comparison.
      position = ci.LastIndexOf(s1, 'm');
      Console.WriteLine("'m' at position {0}", position, CompareOptions.Ordinal);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', position, CompareOptions.Ordinal));

      position = ci.LastIndexOf(s2, 'm');
      Console.WriteLine("'m' at position {0}", position, CompareOptions.Ordinal);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', position, CompareOptions.Ordinal));
   }
}
// The example displays the following output:
//       'm' at position 4
//       4
//       'm' at position 3
//       3
//       'm' at position 4
//       3
//       'm' at position 3
//       -1

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim softHyphen As Char = ChrW(&h00AD)
      Dim position As Integer
      
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the index of the soft hyphen using culture-sensitive comparison.
      position = ci.LastIndexOf(s1, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen, position, CompareOptions.IgnoreCase))
      End If
      
      position = ci.LastIndexOf(s2, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen, position, CompareOptions.IgnoreCase))
      End If  
       
      ' Find the index of the soft hyphen using ordinal comparison.
      position = ci.LastIndexOf(s1, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen, position, CompareOptions.Ordinal))
      End If
      
      position = ci.LastIndexOf(s2, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen, position, CompareOptions.Ordinal))
      End If   
   End Sub
End Module
' The example displays the following output:
'       'm' at position 4
'       4
'       'm' at position 3
'       3
'       'm' at position 4
'       3
'       'm' at position 3
'       -1

Weitere Informationen

Gilt für:

LastIndexOf(ReadOnlySpan<Char>, ReadOnlySpan<Char>, CompareOptions, Int32)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach dem letzten Vorkommen einer Teilzeichenfolge innerhalb einer Quellzeichenfolge.

public:
 int LastIndexOf(ReadOnlySpan<char> source, ReadOnlySpan<char> value, System::Globalization::CompareOptions options, [Runtime::InteropServices::Out] int % matchLength);

public int LastIndexOf (ReadOnlySpan<char> source, ReadOnlySpan<char> value, System.Globalization.CompareOptions options, out int matchLength);

member this.LastIndexOf : ReadOnlySpan<char> * ReadOnlySpan<char> * System.Globalization.CompareOptions * int -> int

Public Function LastIndexOf (source As ReadOnlySpan(Of Char), value As ReadOnlySpan(Of Char), options As CompareOptions, ByRef matchLength As Integer) As Integer

Parameter

source: ReadOnlySpan<Char>

Die schreibgeschützte Zeichenspanne, die durchsucht werden soll.

value: ReadOnlySpan<Char>

Die schreibgeschützte Zeichenspanne, die die Teilzeichenfolge enthält, die in source ermittelt werden soll.

options: CompareOptions

Die bei der Suche zu verwendenden CompareOptions.

matchLength: Int32

In der Rückgabe dieser Methode ist die Anzahl der Zeichen aus source enthalten, die mit dem gewünschten Wert übereinstimmen. Dies kann sich von der Länge von value unterscheiden, wenn ein linguistischer Vergleich durchgeführt wird. Wird auf 0 festgelegt, wenn value nicht innerhalb von source gefunden wird.

Gibt zurück

Int32

Der nullbasierte Index in source, in dem die Teilzeichenfolge value zuletzt auftritt, oder eine negative Zahl, wenn value nicht in source gefunden werden kann.

Ausnahmen

ArgumentException

options enthält eine nicht unterstützte Flagkombination.

Hinweise

Diese Methode hat einen höheren Mehraufwand als andere LastIndexOf Überladungen, die kein Argument annehmen matchLength . Rufen Sie diese Überladung nur auf, wenn Sie die Informationen zur Übereinstimmungslänge benötigen.

Gilt für:

LastIndexOf(String, Char)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.

public:
 virtual int LastIndexOf(System::String ^ source, char value);

public:
 int LastIndexOf(System::String ^ source, char value);

public virtual int LastIndexOf (string source, char value);

public int LastIndexOf (string source, char value);

abstract member LastIndexOf : string * char -> int
override this.LastIndexOf : string * char -> int

member this.LastIndexOf : string * char -> int

Public Overridable Function LastIndexOf (source As String, value As Char) As Integer

Public Function LastIndexOf (source As String, value As Char) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: Char

Das Zeichen, das in der source gesucht werden soll.

Gibt zurück

Int32

Der nullbasierte Index des letzten Vorkommens von value in source, sofern gefunden, andernfalls -1.

Ausnahmen

ArgumentNullException

source ist null.

Beispiele

Im folgenden Beispiel werden die Indizes des ersten und letzten Vorkommens eines Zeichens oder einer Teilzeichenfolge innerhalb einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE" ), myComp->LastIndexOf( myStr, "AE" ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae" ), myComp->LastIndexOf( myStr, "ae" ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ' ), myComp->LastIndexOf( myStr, L'Æ' ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ' ), myComp->LastIndexOf( myStr, L'æ' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308" ), myComp->LastIndexOf( myStr, "U\u0308" ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308" ), myComp->LastIndexOf( myStr, "u\u0308" ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü' ), myComp->LastIndexOf( myStr, L'Ü' ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü' ), myComp->LastIndexOf( myStr, L'ü' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE" ), myComp.LastIndexOf( myStr, "AE" ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae" ), myComp.LastIndexOf( myStr, "ae" ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ' ), myComp.LastIndexOf( myStr, 'Æ' ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ' ), myComp.LastIndexOf( myStr, 'æ' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308" ), myComp.LastIndexOf( myStr, "U\u0308" ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308" ), myComp.LastIndexOf( myStr, "u\u0308" ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü' ), myComp.LastIndexOf( myStr, 'Ü' ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü' ), myComp.LastIndexOf( myStr, 'ü' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE"), myComp.LastIndexOf(myStr, "AE"))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae"), myComp.LastIndexOf(myStr, "ae"))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c), myComp.LastIndexOf(myStr, "Æ"c))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c), myComp.LastIndexOf(myStr, "æ"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308)))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308)))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c), myComp.LastIndexOf(myStr, "Ü"c))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c), myComp.LastIndexOf(myStr, "ü"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 
         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'No options    : Is AE or ae the same as Æ or æ?
'           AE :    f                    l
'           ae :          f                   l
'            Æ :    f                    l
'            æ :          f                   l
'Ordinal       : Is AE or ae the same as Æ or æ?
'           AE :    b
'           ae :          b
'            Æ :                         b
'            æ :                              b
'IgnoreCase    : Is AE or ae the same as Æ or æ?
'           AE :    f                         l
'           ae :    f                         l
'            Æ :    f                         l
'            æ :    f                         l
'
'No options    : Is U" or u" the same as Ü or ü?
'           U" :    f                    l
'           u" :          f                   l
'            Ü :    f                    l
'            ü :          f                   l
'Ordinal       : Is U" or u" the same as Ü or ü?
'           U" :    b
'           u" :          b
'            Ü :                         b
'            ü :                              b
'IgnoreCase    : Is U" or u" the same as Ü or ü?
'           U" :    f                         l
'           u" :    f                         l
'            Ü :    f                         l
'            ü :    f                         l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am Ende der Zeichenfolge und am Anfang der Zeichenfolge.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Wenn bei einer kulturabhängigen Suche value ein ignorables Zeichen ist, entspricht das Ergebnis der Suche mit entferntem Zeichen. In diesem Fall gibt die LastIndexOf(String, Char) -Methode immer die letzte Indexposition in source zurück, um anzugeben, dass die Übereinstimmung am Ende von sourcegefunden wird. Im folgenden Beispiel wird die LastIndexOf(String, Char) -Methode verwendet, um den weichen Bindestrich (U+00AD) in zwei Zeichenfolgen zu finden. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. Da der weiche Bindestrich ein ignorierbares Zeichen ist, gibt die Methode in beiden Fällen die letzte Indexposition in der Zeichenfolge zurück, um anzugeben, dass am Ende der Zeichenfolge eine Übereinstimmung gefunden wurde.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      // Find the index of the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, '\u00AD'));
      Console.WriteLine(ci.LastIndexOf(s2, '\u00AD'));
   }
}
// The example displays the following output:
//       6
//       5

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim softHyphen As Char = ChrW(&h00AD)
      
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the index of the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen))
   End Sub
End Module
' The example displays the following output:
'       6
'       5

Weitere Informationen

IndexOf(String, Char)

Gilt für:

LastIndexOf(String, String, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht mithilfe des angegebenen CompareOptions-Werts nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.

public:
 virtual int LastIndexOf(System::String ^ source, System::String ^ value, System::Globalization::CompareOptions options);

public:
 int LastIndexOf(System::String ^ source, System::String ^ value, System::Globalization::CompareOptions options);

public virtual int LastIndexOf (string source, string value, System.Globalization.CompareOptions options);

public int LastIndexOf (string source, string value, System.Globalization.CompareOptions options);

abstract member LastIndexOf : string * string * System.Globalization.CompareOptions -> int
override this.LastIndexOf : string * string * System.Globalization.CompareOptions -> int

member this.LastIndexOf : string * string * System.Globalization.CompareOptions -> int

Public Overridable Function LastIndexOf (source As String, value As String, options As CompareOptions) As Integer

Public Function LastIndexOf (source As String, value As String, options As CompareOptions) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: String

Die Zeichenfolge, die in der source gesucht werden soll.

options: CompareOptions

Gibt zurück

Int32

Der nullbasierte Index des mithilfe der angegebenen Vergleichsoptionen gesuchten letzten Vorkommens von value in source, sofern gefunden, andernfalls -1.

Ausnahmen

ArgumentNullException

source ist null.

- oder -

value ist null.

ArgumentException

options enthält einen ungültigen CompareOptions-Wert.

Beispiele

Im folgenden Beispiel werden die Indizes des ersten und letzten Vorkommens eines Zeichens oder einer Teilzeichenfolge innerhalb einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE" ), myComp->LastIndexOf( myStr, "AE" ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae" ), myComp->LastIndexOf( myStr, "ae" ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ' ), myComp->LastIndexOf( myStr, L'Æ' ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ' ), myComp->LastIndexOf( myStr, L'æ' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308" ), myComp->LastIndexOf( myStr, "U\u0308" ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308" ), myComp->LastIndexOf( myStr, "u\u0308" ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü' ), myComp->LastIndexOf( myStr, L'Ü' ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü' ), myComp->LastIndexOf( myStr, L'ü' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE" ), myComp.LastIndexOf( myStr, "AE" ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae" ), myComp.LastIndexOf( myStr, "ae" ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ' ), myComp.LastIndexOf( myStr, 'Æ' ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ' ), myComp.LastIndexOf( myStr, 'æ' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308" ), myComp.LastIndexOf( myStr, "U\u0308" ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308" ), myComp.LastIndexOf( myStr, "u\u0308" ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü' ), myComp.LastIndexOf( myStr, 'Ü' ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü' ), myComp.LastIndexOf( myStr, 'ü' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE"), myComp.LastIndexOf(myStr, "AE"))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae"), myComp.LastIndexOf(myStr, "ae"))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c), myComp.LastIndexOf(myStr, "Æ"c))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c), myComp.LastIndexOf(myStr, "æ"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308)))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308)))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c), myComp.LastIndexOf(myStr, "Ü"c))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c), myComp.LastIndexOf(myStr, "ü"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 
         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'No options    : Is AE or ae the same as Æ or æ?
'           AE :    f                    l
'           ae :          f                   l
'            Æ :    f                    l
'            æ :          f                   l
'Ordinal       : Is AE or ae the same as Æ or æ?
'           AE :    b
'           ae :          b
'            Æ :                         b
'            æ :                              b
'IgnoreCase    : Is AE or ae the same as Æ or æ?
'           AE :    f                         l
'           ae :    f                         l
'            Æ :    f                         l
'            æ :    f                         l
'
'No options    : Is U" or u" the same as Ü or ü?
'           U" :    f                    l
'           u" :          f                   l
'            Ü :    f                    l
'            ü :          f                   l
'Ordinal       : Is U" or u" the same as Ü or ü?
'           U" :    b
'           u" :          b
'            Ü :                         b
'            ü :                              b
'IgnoreCase    : Is U" or u" the same as Ü or ü?
'           U" :    f                         l
'           u" :    f                         l
'            Ü :    f                         l
'            ü :    f                         l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am Ende der Zeichenfolge und am Anfang der Zeichenfolge.

Der CompareOptions.StringSort Wert ist für diese Methode ungültig.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Bei einer kulturabhängige Suche (das heißt, wenn options nicht Ordinal oder OrdinalIgnoreCase ist), bei der value ein ignorierbares Zeichen enthält, ist das Ergebnis das gleiche wie bei einer Suche ohne dieses Zeichen. Wenn value nur aus einem oder mehreren ignorierbaren Zeichen besteht, gibt sourcedie LastIndexOf(String, String, CompareOptions) Methode immer zurück.Length - 1, was die letzte Indexposition in sourcedarstellt. Im folgenden Beispiel wird die LastIndexOf(String, String, CompareOptions) -Methode verwendet, um drei Teilzeichenfolgen (einen weichen Bindestrich (U+00AD), einen weichen Bindestrich gefolgt von "n" und einen weichen Bindestrich gefolgt von "m") in zwei Zeichenfolgen zu finden. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. Da der weiche Bindestrich ein ignorierbares Zeichen ist, gibt eine kulturabhängige Suche denselben Wert zurück, den sie zurückgeben würde, wenn der weiche Bindestrich nicht in der Suchzeichenfolge enthalten wäre. Eine Ordnungszahlsuche findet jedoch erfolgreich den weichen Bindestrich in einer Zeichenfolge und meldet, dass er in der zweiten Zeichenfolge nicht vorhanden ist.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      Console.WriteLine("Culture-sensitive comparison:");
      // Use culture-sensitive comparison to find the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, "\u00AD", CompareOptions.None));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00AD", CompareOptions.None));

      // Use culture-sensitive comparison to find the last soft hyphen followed by "n".
      Console.WriteLine(ci.LastIndexOf(s1, "\u00ADn", CompareOptions.None));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00ADn", CompareOptions.None));

      // Use culture-sensitive comparison to find the last soft hyphen followed by "m".
      Console.WriteLine(ci.LastIndexOf(s1, "\u00ADm", CompareOptions.None));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00ADm", CompareOptions.None));

      Console.WriteLine("Ordinal comparison:");
      // Use ordinal comparison to find the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, "\u00AD", CompareOptions.Ordinal));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00AD", CompareOptions.Ordinal));

      // Use ordinal comparison to find the last soft hyphen followed by "n".
      Console.WriteLine(ci.LastIndexOf(s1, "\u00ADn", CompareOptions.Ordinal));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00ADn", CompareOptions.Ordinal));

      // Use ordinal comparison to find the last soft hyphen followed by "m".
      Console.WriteLine(ci.LastIndexOf(s1, "\u00ADm", CompareOptions.Ordinal));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00ADm", CompareOptions.Ordinal));
   }
}
// The example displays the following output:
//       6
//       5
//       1
//       1
//       4
//       3
//       Ordinal comparison:
//       3
//       -1
//       -1
//       -1
//       3
//       -1

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim softHyphen As String = ChrW(&h00AD)
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      Console.WriteLine("Culture-sensitive comparison:")
      ' Use culture-sensitive comparison to find the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen, CompareOptions.None))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen, CompareOptions.None))
      
      ' Use culture-sensitive comparison to find the last soft hyphen followed by "n".
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "n", CompareOptions.None))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "n", CompareOptions.None))
      
      ' Use culture-sensitive comparison to find the last soft hyphen followed by "m".
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "m", CompareOptions.None))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "m", CompareOptions.None))
      
      Console.WriteLine("Ordinal comparison:")
      ' Use ordinal comparison to find the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen, CompareOptions.Ordinal))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen, CompareOptions.Ordinal))
      
      ' Use ordinal comparison to find the last soft hyphen followed by "n".
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "n", CompareOptions.Ordinal))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "n", CompareOptions.Ordinal))
      
      ' Use ordinal comparison to find the last soft hyphen followed by "m".
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "m", CompareOptions.Ordinal))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "m", CompareOptions.Ordinal))
   End Sub
End Module
' The example displays the following output:
'       6
'       5
'       1
'       1
'       4
'       3
'       Ordinal comparison:
'       3
'       -1
'       -1
'       -1
'       3
'       -1

Weitere Informationen

Gilt für:

LastIndexOf(String, Char, Int32)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.

public:
 int LastIndexOf(System::String ^ source, char value, int startIndex);

public:
 virtual int LastIndexOf(System::String ^ source, char value, int startIndex);

public int LastIndexOf (string source, char value, int startIndex);

public virtual int LastIndexOf (string source, char value, int startIndex);

member this.LastIndexOf : string * char * int -> int

abstract member LastIndexOf : string * char * int -> int
override this.LastIndexOf : string * char * int -> int

Public Function LastIndexOf (source As String, value As Char, startIndex As Integer) As Integer

Public Overridable Function LastIndexOf (source As String, value As Char, startIndex As Integer) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: Char

Das Zeichen, das in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

Gibt zurück

Int32

Der nullbasierte Index des letzten Vorkommens von value in dem Abschnitt von source, der vom Anfang von source bis startIndex reicht, sofern gefunden, andernfalls -1. Gibt startIndex zurück, wenn value ein ignorierbares Zeichen ist.

Ausnahmen

ArgumentNullException

source ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

Beispiele

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 20;
   
   // myT1 is the string used for padding.
   String^ myT1;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 20;
      // myT1 is the string used for padding.
      String myT1;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 20
      ' myT1 is the string used for padding.
      Dim myT1 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS]), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS]), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS]), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS]))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS]))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS]))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.Ordinal))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.Ordinal))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS]), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS]))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS]))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS]))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))
      
      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'IndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                              f
'            Æ :                         f
'            æ :                              f
'Ordinal       : -------------------- as Æ or æ?
'           AE :
'           ae :
'            Æ :                         f
'            æ :                              f
'IgnoreCase    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                         f
'            Æ :                         f
'            æ :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :    l
'            æ :          l
'Ordinal       : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :
'            æ :
'IgnoreCase    : Is AE or ae the same ----------
'           AE :          l
'           ae :          l
'            Æ :          l
'            æ :          l
'
'IndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                              f
'            Ü :                         f
'            ü :                              f
'Ordinal       : -------------------- as Ü or ü?
'           U" :
'           u" :
'            Ü :                         f
'            ü :                              f
'IgnoreCase    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                         f
'            Ü :                         f
'            ü :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :    l
'            ü :          l
'Ordinal       : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :
'            ü :
'IgnoreCase    : Is U" or u" the same ----------
'           U" :          l
'           u" :          l
'            Ü :          l
'            ü :          l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am startIndex Anfang und endend am Anfang der Zeichenfolge.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Wenn bei einer kulturabhängigen Suche value ein ignorables Zeichen ist, entspricht das Ergebnis der Suche mit entferntem Zeichen. In diesem Fall gibt die LastIndexOf(String, Char, Int32) -Methode immer zurück startIndex. Dies ist die Zeichenposition, an der die Suche beginnt. Im folgenden Beispiel wird die LastIndexOf(String, Char, Int32) -Methode verwendet, um einen weichen Bindestrich (U+00AD) zu finden, der dem endgültigen "m" in zwei Zeichenfolgen vorangestellt ist. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. Da der weiche Bindestrich in beiden Fällen ein ignorierbares Zeichen ist, gibt die Methode die Indexposition des "m" zurück, was dem Wert von startIndexentspricht.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      int position = 0;

      // Find the last index of the soft hyphen.
      position = ci.LastIndexOf(s1, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', position));

      position = ci.LastIndexOf(s2, 'm');
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', position));
   }
}
// The example displays the following output:
//       'm' at position 4
//       4
//       'm' at position 3

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim position As Integer
      Dim softHyphen As Char = ChrW(&h00AD)
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the last index of the soft hyphen.
      position = ci.LastIndexOf(s1, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen, position))
      End If
      
      position = ci.LastIndexOf(s2, "m"c)
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen, position))
      End If   
   End Sub
End Module
' The example displays the following output:
'       'm' at position 4
'       4
'       'm' at position 3
'       3

Weitere Informationen

IndexOf(String, Char)

Gilt für:

LastIndexOf(String, Char, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht mithilfe des angegebenen CompareOptions-Werts nach dem angegebenen Zeichen und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.

public:
 virtual int LastIndexOf(System::String ^ source, char value, System::Globalization::CompareOptions options);

public:
 int LastIndexOf(System::String ^ source, char value, System::Globalization::CompareOptions options);

public virtual int LastIndexOf (string source, char value, System.Globalization.CompareOptions options);

public int LastIndexOf (string source, char value, System.Globalization.CompareOptions options);

abstract member LastIndexOf : string * char * System.Globalization.CompareOptions -> int
override this.LastIndexOf : string * char * System.Globalization.CompareOptions -> int

member this.LastIndexOf : string * char * System.Globalization.CompareOptions -> int

Public Overridable Function LastIndexOf (source As String, value As Char, options As CompareOptions) As Integer

Public Function LastIndexOf (source As String, value As Char, options As CompareOptions) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: Char

Das Zeichen, das in der source gesucht werden soll.

options: CompareOptions

Gibt zurück

Int32

Der nullbasierte Index des mithilfe der angegebenen Vergleichsoptionen gesuchten letzten Vorkommens von value in source, sofern gefunden, andernfalls -1.

Ausnahmen

ArgumentNullException

source ist null.

ArgumentException

options enthält einen ungültigen CompareOptions-Wert.

Beispiele

Im folgenden Beispiel werden die Indizes des ersten und letzten Vorkommens eines Zeichens oder einer Teilzeichenfolge innerhalb einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE" ), myComp->LastIndexOf( myStr, "AE" ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae" ), myComp->LastIndexOf( myStr, "ae" ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ' ), myComp->LastIndexOf( myStr, L'Æ' ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ' ), myComp->LastIndexOf( myStr, L'æ' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308" ), myComp->LastIndexOf( myStr, "U\u0308" ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308" ), myComp->LastIndexOf( myStr, "u\u0308" ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü' ), myComp->LastIndexOf( myStr, L'Ü' ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü' ), myComp->LastIndexOf( myStr, L'ü' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE" ), myComp.LastIndexOf( myStr, "AE" ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae" ), myComp.LastIndexOf( myStr, "ae" ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ' ), myComp.LastIndexOf( myStr, 'Æ' ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ' ), myComp.LastIndexOf( myStr, 'æ' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308" ), myComp.LastIndexOf( myStr, "U\u0308" ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308" ), myComp.LastIndexOf( myStr, "u\u0308" ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü' ), myComp.LastIndexOf( myStr, 'Ü' ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü' ), myComp.LastIndexOf( myStr, 'ü' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE"), myComp.LastIndexOf(myStr, "AE"))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae"), myComp.LastIndexOf(myStr, "ae"))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c), myComp.LastIndexOf(myStr, "Æ"c))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c), myComp.LastIndexOf(myStr, "æ"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308)))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308)))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c), myComp.LastIndexOf(myStr, "Ü"c))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c), myComp.LastIndexOf(myStr, "ü"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 
         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'No options    : Is AE or ae the same as Æ or æ?
'           AE :    f                    l
'           ae :          f                   l
'            Æ :    f                    l
'            æ :          f                   l
'Ordinal       : Is AE or ae the same as Æ or æ?
'           AE :    b
'           ae :          b
'            Æ :                         b
'            æ :                              b
'IgnoreCase    : Is AE or ae the same as Æ or æ?
'           AE :    f                         l
'           ae :    f                         l
'            Æ :    f                         l
'            æ :    f                         l
'
'No options    : Is U" or u" the same as Ü or ü?
'           U" :    f                    l
'           u" :          f                   l
'            Ü :    f                    l
'            ü :          f                   l
'Ordinal       : Is U" or u" the same as Ü or ü?
'           U" :    b
'           u" :          b
'            Ü :                         b
'            ü :                              b
'IgnoreCase    : Is U" or u" the same as Ü or ü?
'           U" :    f                         l
'           u" :    f                         l
'            Ü :    f                         l
'            ü :    f                         l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am Ende der Zeichenfolge und am Anfang der Zeichenfolge.

Der CompareOptions.StringSort Wert ist für diese Methode ungültig.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Wenn bei einer kulturabhängigen Suche value ein ignorables Zeichen ist, entspricht das Ergebnis der Suche mit entferntem Zeichen. In diesem Fall gibt die LastIndexOf(String, Char, CompareOptions) -Methode immer die letzte Zeichenposition in source zurück, um anzugeben, dass die Übereinstimmung am Ende von sourcegefunden wird. Im folgenden Beispiel wird die LastIndexOf(String, Char, CompareOptions) -Methode verwendet, um in zwei Zeichenfolgen nach einem weichen Bindestrich (U+00AD) zu suchen. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. Da der weiche Bindestrich in beiden Fällen ein ignorables Zeichen ist, gibt eine kulturabhängige Suche die letzte Indexposition in der Quellzeichenfolge zurück. Im Gegensatz dazu findet eine Ordnungszahlsuche erfolgreich den weichen Bindestrich in einer Zeichenfolge und meldet, dass er in der zweiten Zeichenfolge nicht vorhanden ist.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      // Find the last index of the soft hyphen using culture-sensitive comparison.
      Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', CompareOptions.IgnoreCase));
      Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', CompareOptions.IgnoreCase));

      // Find the last index of the soft hyphen using ordinal comparison.
      Console.WriteLine(ci.LastIndexOf(s1, '\u00AD', CompareOptions.Ordinal));
      Console.WriteLine(ci.LastIndexOf(s2, '\u00AD', CompareOptions.Ordinal));
   }
}
// The example displays the following output:
//       6
//       5
//       3
//       -1

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim softHyphen As Char = ChrW(&h00AD)
      
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the last index of the soft hyphen using culture-sensitive comparison.
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen, CompareOptions.IgnoreCase))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen, CompareOptions.IgnoreCase))
      
      ' Find the last index of the soft hyphen using ordinal comparison.
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen, CompareOptions.Ordinal))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen, CompareOptions.Ordinal))
   End Sub
End Module
' The example displays the following output:
'       6
'       5
'       3
'       -1

Weitere Informationen

Gilt für:

LastIndexOf(ReadOnlySpan<Char>, Rune, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach dem letzten Vorkommen einer Rune-Struktur innerhalb der angegebenen schreibgeschützten Zeichenspanne.

public int LastIndexOf (ReadOnlySpan<char> source, System.Text.Rune value, System.Globalization.CompareOptions options = System.Globalization.CompareOptions.None);

member this.LastIndexOf : ReadOnlySpan<char> * System.Text.Rune * System.Globalization.CompareOptions -> int

Public Function LastIndexOf (source As ReadOnlySpan(Of Char), value As Rune, Optional options As CompareOptions = System.Globalization.CompareOptions.None) As Integer

Parameter

source: ReadOnlySpan<Char>

Die schreibgeschützte Zeichenspanne, die durchsucht werden soll.

value: Rune

Die Rune-Struktur, die in source gesucht werden soll.

options: CompareOptions

Eine optionale Kombination aus CompareOptions-Enumerationswerten, die während der Suche verwendet werden sollen. Der Standardwert ist None.

Gibt zurück

Int32

Der nullbasierte Index in source, in dem value zuletzt auftritt, oder ein negativer Wert, wenn value nicht in source gefunden werden kann.

Ausnahmen

ArgumentException

options enthält eine nicht unterstützte Flagkombination.

Gilt für:

LastIndexOf(ReadOnlySpan<Char>, ReadOnlySpan<Char>, CompareOptions)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach dem letzten Vorkommen einer Teilzeichenfolge innerhalb der angegebenen schreibgeschützten Zeichenspanne.

public int LastIndexOf (ReadOnlySpan<char> source, ReadOnlySpan<char> value, System.Globalization.CompareOptions options = System.Globalization.CompareOptions.None);

member this.LastIndexOf : ReadOnlySpan<char> * ReadOnlySpan<char> * System.Globalization.CompareOptions -> int

Public Function LastIndexOf (source As ReadOnlySpan(Of Char), value As ReadOnlySpan(Of Char), Optional options As CompareOptions = System.Globalization.CompareOptions.None) As Integer

Parameter

source: ReadOnlySpan<Char>

Die schreibgeschützte Zeichenspanne, die durchsucht werden soll.

value: ReadOnlySpan<Char>

Die in source zu suchende Teilzeichenfolge.

options: CompareOptions

Eine optionale Kombination aus CompareOptions-Enumerationswerten, die während der Suche verwendet werden sollen. Der Standardwert ist None.

Gibt zurück

Int32

Der nullbasierte Index in source, in dem die Teilzeichenfolge value zuletzt auftritt, oder ein negativer Wert, wenn value nicht in source gefunden werden kann.

Ausnahmen

ArgumentException

options enthält eine nicht unterstützte Flagkombination.

Gilt für:

LastIndexOf(String, String)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in der gesamten Quellzeichenfolge zurück.

public:
 virtual int LastIndexOf(System::String ^ source, System::String ^ value);

public:
 int LastIndexOf(System::String ^ source, System::String ^ value);

public virtual int LastIndexOf (string source, string value);

public int LastIndexOf (string source, string value);

abstract member LastIndexOf : string * string -> int
override this.LastIndexOf : string * string -> int

member this.LastIndexOf : string * string -> int

Public Overridable Function LastIndexOf (source As String, value As String) As Integer

Public Function LastIndexOf (source As String, value As String) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: String

Die Zeichenfolge, die in der source gesucht werden soll.

Gibt zurück

Int32

Der nullbasierte Index des letzten Vorkommens von value in source, sofern gefunden, andernfalls -1.

Ausnahmen

ArgumentNullException

source ist null.

- oder -

value ist null.

Beispiele

Im folgenden Beispiel werden die Indizes des ersten und letzten Vorkommens eines Zeichens oder einer Teilzeichenfolge innerhalb einer Zeichenfolge bestimmt.

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE" ), myComp->LastIndexOf( myStr, "AE" ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae" ), myComp->LastIndexOf( myStr, "ae" ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ' ), myComp->LastIndexOf( myStr, L'Æ' ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ' ), myComp->LastIndexOf( myStr, L'æ' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "AE", CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "ae", CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "AE", CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "ae", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Æ', CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'æ', CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   Console::WriteLine( "No options    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308" ), myComp->LastIndexOf( myStr, "U\u0308" ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308" ), myComp->LastIndexOf( myStr, "u\u0308" ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü' ), myComp->LastIndexOf( myStr, L'Ü' ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü' ), myComp->LastIndexOf( myStr, L'ü' ) );
   Console::WriteLine( "Ordinal       : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::Ordinal ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}", myStr );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "U\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, "u\u0308", CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'Ü', CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', CompareOptions::IgnoreCase ), myComp->LastIndexOf( myStr, L'ü', CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE" ), myComp.LastIndexOf( myStr, "AE" ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae" ), myComp.LastIndexOf( myStr, "ae" ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ' ), myComp.LastIndexOf( myStr, 'Æ' ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ' ), myComp.LastIndexOf( myStr, 'æ' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "AE", CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "ae", CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "AE", CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "ae", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Æ', CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'æ', CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();
      Console.WriteLine( "No options    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308" ), myComp.LastIndexOf( myStr, "U\u0308" ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308" ), myComp.LastIndexOf( myStr, "u\u0308" ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü' ), myComp.LastIndexOf( myStr, 'Ü' ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü' ), myComp.LastIndexOf( myStr, 'ü' ) );
      Console.WriteLine( "Ordinal       : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.Ordinal ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}", myStr );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "U\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, "u\u0308", CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'Ü', CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', CompareOptions.IgnoreCase ), myComp.LastIndexOf( myStr, 'ü', CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

No options    : Is AE or ae the same as Æ or æ?
           AE :    f                    l
           ae :          f                   l
            Æ :    f                    l
            æ :          f                   l
Ordinal       : Is AE or ae the same as Æ or æ?
           AE :    b
           ae :          b
            Æ :                         b
            æ :                              b
IgnoreCase    : Is AE or ae the same as Æ or æ?
           AE :    f                         l
           ae :    f                         l
            Æ :    f                         l
            æ :    f                         l

No options    : Is U" or u" the same as Ü or ü?
           U" :    f                    l
           u" :          f                   l
            Ü :    f                    l
            ü :          f                   l
Ordinal       : Is U" or u" the same as Ü or ü?
           U" :    b
           u" :          b
            Ü :                         b
            ü :                              b
IgnoreCase    : Is U" or u" the same as Ü or ü?
           U" :    f                         l
           u" :    f                         l
            Ü :    f                         l
            ü :    f                         l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE"), myComp.LastIndexOf(myStr, "AE"))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae"), myComp.LastIndexOf(myStr, "ae"))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c), myComp.LastIndexOf(myStr, "Æ"c))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c), myComp.LastIndexOf(myStr, "æ"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "AE", CompareOptions.Ordinal))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ae", CompareOptions.Ordinal))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.Ordinal))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "AE", CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ae", CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Æ"c, CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "æ"c, CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()
      Console.WriteLine("No options    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308)))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308)), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308)))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c), myComp.LastIndexOf(myStr, "Ü"c))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c), myComp.LastIndexOf(myStr, "ü"c))
      Console.WriteLine("Ordinal       : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.Ordinal))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.Ordinal))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.Ordinal), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}", myStr)
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "Ü"c, CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, CompareOptions.IgnoreCase), myComp.LastIndexOf(myStr, "ü"c, CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 
         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))

      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'No options    : Is AE or ae the same as Æ or æ?
'           AE :    f                    l
'           ae :          f                   l
'            Æ :    f                    l
'            æ :          f                   l
'Ordinal       : Is AE or ae the same as Æ or æ?
'           AE :    b
'           ae :          b
'            Æ :                         b
'            æ :                              b
'IgnoreCase    : Is AE or ae the same as Æ or æ?
'           AE :    f                         l
'           ae :    f                         l
'            Æ :    f                         l
'            æ :    f                         l
'
'No options    : Is U" or u" the same as Ü or ü?
'           U" :    f                    l
'           u" :          f                   l
'            Ü :    f                    l
'            ü :          f                   l
'Ordinal       : Is U" or u" the same as Ü or ü?
'           U" :    b
'           u" :          b
'            Ü :                         b
'            ü :                              b
'IgnoreCase    : Is U" or u" the same as Ü or ü?
'           U" :    f                         l
'           u" :    f                         l
'            Ü :    f                         l
'            ü :    f                         l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am Ende der Zeichenfolge und am Anfang der Zeichenfolge.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Bei einer kulturabhängige Suche, bei der value ein ignorierbares Zeichen enthält, ist das Ergebnis das gleiche wie bei einer Suche ohne dieses Zeichen. Wenn value nur aus einem oder mehreren ignorierbaren Zeichen besteht, gibt sourcedie LastIndexOf(String, String) Methode immer zurück.Length - 1, was die letzte Indexposition in sourcedarstellt. Im folgenden Beispiel wird die LastIndexOf(String, String) -Methode verwendet, um drei Teilzeichenfolgen (einen weichen Bindestrich (U+00AD), einen weichen Bindestrich gefolgt von "n" und einen weichen Bindestrich gefolgt von "m") in zwei Zeichenfolgen zu finden. Nur eine der Zeichenfolgen enthält einen bedingten Bindestrich. Da der weiche Bindestrich in jedem Fall ein ignorierbares Zeichen ist, ist das Ergebnis dasselbe, als ob der weiche Bindestrich nicht in valueenthalten gewesen wäre. Wenn nur nach einem weichen Bindestrich gesucht wird, gibt die Methode 6 und 5 zurück. Diese Werte entsprechen dem Index des letzten Zeichens in den beiden Zeichenfolgen.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      // Find the index of the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, "\u00AD"));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00AD"));

      // Find the index of the last soft hyphen followed by "n".
      Console.WriteLine(ci.LastIndexOf(s1, "\u00ADn"));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00ADn"));

      // Find the index of the last soft hyphen followed by "m".
      Console.WriteLine(ci.LastIndexOf(s1, "\u00ADm"));
      Console.WriteLine(ci.LastIndexOf(s2, "\u00ADm"));
   }
}
// The example displays the following output:
//       6
//       5
//       1
//       1
//       4
//       3

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim softHyphen As String = ChrW(&h00AD)
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the index of the last soft hyphen.
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen))
      
      ' Find the index of the last soft hyphen followed by "n".
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "n"))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "n"))
      
      ' Find the index of the last soft hyphen followed by "m".
      Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "m"))
      Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "m"))
   End Sub
End Module
' The example displays the following output:
'       6
'       5
'       1
'       1
'       4
'       3

Weitere Informationen

IndexOf(String, Char)

Gilt für:

LastIndexOf(String, String, Int32)

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Quelle:: CompareInfo.cs

Sucht nach der angegebenen Teilzeichenfolge und gibt den nullbasierten Index des letzten Vorkommens in dem Abschnitt der Quellzeichenfolge zurück, der vom Anfang der Zeichenfolge bis zum angegebenen Index reicht.

public:
 int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex);

public:
 virtual int LastIndexOf(System::String ^ source, System::String ^ value, int startIndex);

public int LastIndexOf (string source, string value, int startIndex);

public virtual int LastIndexOf (string source, string value, int startIndex);

member this.LastIndexOf : string * string * int -> int

abstract member LastIndexOf : string * string * int -> int
override this.LastIndexOf : string * string * int -> int

Public Function LastIndexOf (source As String, value As String, startIndex As Integer) As Integer

Public Overridable Function LastIndexOf (source As String, value As String, startIndex As Integer) As Integer

Parameter

source: String

Die zu durchsuchende Zeichenfolge.

value: String

Die Zeichenfolge, die in der source gesucht werden soll.

startIndex: Int32

Der nullbasierte Startindex für die Rückwärtssuche.

Gibt zurück

Int32

Ausnahmen

ArgumentNullException

source ist null.

- oder -

value ist null.

ArgumentOutOfRangeException

startIndex liegt außerhalb des Bereichs der gültigen Indizes für source.

Beispiele

using namespace System;
using namespace System::Globalization;
void PrintMarker( String^ Prefix, int First, int Last )
{
   
   // Determines the size of the array to create.
   int mySize;
   if ( Last > First )
      mySize = Last;
   else
      mySize = First;

   if ( mySize > -1 )
   {
      
      // Creates an array of Char to hold the markers.
      array<Char>^myCharArr = gcnew array<Char>(mySize + 1);
      
      // Inserts the appropriate markers.
      if ( First > -1 )
            myCharArr[ First ] = 'f';
      if ( Last > -1 )
            myCharArr[ Last ] = 'l';
      if ( First == Last )
            myCharArr[ First ] = 'b';
      
      // Displays the array of Char as a String.
      Console::WriteLine( "{0}{1}", Prefix, gcnew String( myCharArr ) );
   }
   else
      Console::WriteLine( Prefix );
}

int main()
{
   
   // Creates CompareInfo for the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // iS is the starting index of the substring.
   int iS = 20;
   
   // myT1 is the string used for padding.
   String^ myT1;
   
   // Searches for the ligature Æ.
   String^ myStr = "Is AE or ae the same as Æ or æ?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           AE : ", myComp->IndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           ae : ", myComp->IndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Æ : ", myComp->IndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            æ : ", myComp->IndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           AE : ", -1, myComp->LastIndexOf( myStr, "AE", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           ae : ", -1, myComp->LastIndexOf( myStr, "ae", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Æ : ", -1, myComp->LastIndexOf( myStr, L'Æ', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            æ : ", -1, myComp->LastIndexOf( myStr, L'æ', iS, CompareOptions::IgnoreCase ) );
   
   // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
   myStr = "Is U\u0308 or u\u0308 the same as \u00DC or \u00FC?";
   Console::WriteLine();
   myT1 = gcnew String( '-',iS );
   Console::WriteLine( "IndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS ), -1 );
   Console::WriteLine( "Ordinal       : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ), -1 );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr->Substring( iS ) );
   PrintMarker( "           U\u0308 : ", myComp->IndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "           u\u0308 : ", myComp->IndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            Ü : ", myComp->IndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ), -1 );
   PrintMarker( "            ü : ", myComp->IndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ), -1 );
   myT1 = gcnew String( '-',myStr->Length - iS - 1 );
   Console::WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
   Console::WriteLine( "Original      : {0}", myStr );
   Console::WriteLine( "No options    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS ) );
   Console::WriteLine( "Ordinal       : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::Ordinal ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::Ordinal ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::Ordinal ) );
   Console::WriteLine( "IgnoreCase    : {0}{1}", myStr->Substring( 0, iS + 1 ), myT1 );
   PrintMarker( "           U\u0308 : ", -1, myComp->LastIndexOf( myStr, "U\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "           u\u0308 : ", -1, myComp->LastIndexOf( myStr, "u\u0308", iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            Ü : ", -1, myComp->LastIndexOf( myStr, L'Ü', iS, CompareOptions::IgnoreCase ) );
   PrintMarker( "            ü : ", -1, myComp->LastIndexOf( myStr, L'ü', iS, CompareOptions::IgnoreCase ) );
}

/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Creates CompareInfo for the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // iS is the starting index of the substring.
      int iS = 20;
      // myT1 is the string used for padding.
      String myT1;

      // Searches for the ligature Æ.
      String myStr = "Is AE or ae the same as Æ or æ?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           AE : ", myComp.IndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           ae : ", myComp.IndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Æ : ", myComp.IndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            æ : ", myComp.IndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           AE : ", -1, myComp.LastIndexOf( myStr, "AE", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           ae : ", -1, myComp.LastIndexOf( myStr, "ae", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Æ : ", -1, myComp.LastIndexOf( myStr, 'Æ', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            æ : ", -1, myComp.LastIndexOf( myStr, 'æ', iS, CompareOptions.IgnoreCase ) );

      // Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is \u0055\u0308 or \u0075\u0308 the same as \u00DC or \u00FC?";
      Console.WriteLine();

      myT1 = new String( '-', iS );
      Console.WriteLine( "IndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS ), -1 );
      Console.WriteLine( "Ordinal       : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ), -1 );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myT1, myStr.Substring( iS ) );
      PrintMarker( "           U\u0308 : ", myComp.IndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "           u\u0308 : ", myComp.IndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            Ü : ", myComp.IndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ), -1 );
      PrintMarker( "            ü : ", myComp.IndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ), -1 );

      myT1 = new String( '-', myStr.Length - iS - 1 );
      Console.WriteLine( "LastIndexOf( String, *, {0}, * )", iS );
      Console.WriteLine( "Original      : {0}", myStr );
      Console.WriteLine( "No options    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS ) );
      Console.WriteLine( "Ordinal       : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.Ordinal ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.Ordinal ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.Ordinal ) );
      Console.WriteLine( "IgnoreCase    : {0}{1}", myStr.Substring( 0, iS + 1 ), myT1 );
      PrintMarker( "           U\u0308 : ", -1, myComp.LastIndexOf( myStr, "U\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "           u\u0308 : ", -1, myComp.LastIndexOf( myStr, "u\u0308", iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            Ü : ", -1, myComp.LastIndexOf( myStr, 'Ü', iS, CompareOptions.IgnoreCase ) );
      PrintMarker( "            ü : ", -1, myComp.LastIndexOf( myStr, 'ü', iS, CompareOptions.IgnoreCase ) );
   }

   public static void PrintMarker( String Prefix, int First, int Last )  {

      // Determines the size of the array to create.
      int mySize;
      if ( Last > First )
         mySize = Last;
      else
         mySize = First;

      if ( mySize > -1 )  {

         // Creates an array of Char to hold the markers.
         Char[] myCharArr = new Char[mySize+1];

         // Inserts the appropriate markers.
         if ( First > -1 )
         myCharArr[First] = 'f';
         if ( Last > -1 )
            myCharArr[Last] = 'l';
         if ( First == Last )
         myCharArr[First] = 'b';

         // Displays the array of Char as a String.
         Console.WriteLine( "{0}{1}", Prefix, new String( myCharArr ) );
      }
      else
        {
            Console.WriteLine( Prefix );
        }
    }
}


/*
This code produces the following output.

IndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : -------------------- as Æ or æ?
           AE :                         f
           ae :                              f
            Æ :                         f
            æ :                              f
Ordinal       : -------------------- as Æ or æ?
           AE :
           ae :
            Æ :                         f
            æ :                              f
IgnoreCase    : -------------------- as Æ or æ?
           AE :                         f
           ae :                         f
            Æ :                         f
            æ :                         f
LastIndexOf( String, *, 20, * )
Original      : Is AE or ae the same as Æ or æ?
No options    : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :    l
            æ :          l
Ordinal       : Is AE or ae the same ----------
           AE :    l
           ae :          l
            Æ :
            æ :
IgnoreCase    : Is AE or ae the same ----------
           AE :          l
           ae :          l
            Æ :          l
            æ :          l

IndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : -------------------- as Ü or ü?
           U" :                         f
           u" :                              f
            Ü :                         f
            ü :                              f
Ordinal       : -------------------- as Ü or ü?
           U" :
           u" :
            Ü :                         f
            ü :                              f
IgnoreCase    : -------------------- as Ü or ü?
           U" :                         f
           u" :                         f
            Ü :                         f
            ü :                         f
LastIndexOf( String, *, 20, * )
Original      : Is U" or u" the same as Ü or ü?
No options    : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :    l
            ü :          l
Ordinal       : Is U" or u" the same ----------
           U" :    l
           u" :          l
            Ü :
            ü :
IgnoreCase    : Is U" or u" the same ----------
           U" :          l
           u" :          l
            Ü :          l
            ü :          l

*/

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Creates CompareInfo for the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' iS is the starting index of the substring.
      Dim [iS] As Integer = 20
      ' myT1 is the string used for padding.
      Dim myT1 As [String]

      ' Searches for the ligature Æ.
      Dim myStr As [String] = "Is AE or ae the same as Æ or æ?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS]), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS]), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS]), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           AE : ", myComp.IndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           ae : ", myComp.IndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Æ : ", myComp.IndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            æ : ", myComp.IndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS]))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS]))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS]))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.Ordinal))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.Ordinal))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           AE : ", - 1, myComp.LastIndexOf(myStr, "AE", [iS], CompareOptions.IgnoreCase))
      PrintMarker("           ae : ", - 1, myComp.LastIndexOf(myStr, "ae", [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Æ : ", - 1, myComp.LastIndexOf(myStr, "Æ"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            æ : ", - 1, myComp.LastIndexOf(myStr, "æ"c, [iS], CompareOptions.IgnoreCase))

      ' Searches for the combining character sequence Latin capital letter U with diaeresis or Latin small letter u with diaeresis.
      myStr = "Is " & ChrW(&H0055) & ChrW(&H0308) & " or " & ChrW(&H0075) & ChrW(&H0308) & " the same as " & ChrW(&H00DC) & " or " & ChrW(&H00FC) & "?"
      Console.WriteLine()

      myT1 = New [String]("-"c, [iS])
      Console.WriteLine("IndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS]), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS]), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS]), - 1)
      Console.WriteLine("Ordinal       : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal), - 1)
      Console.WriteLine("IgnoreCase    : {0}{1}", myT1, myStr.Substring([iS]))
      PrintMarker("           U" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("           u" & ChrW(&H0308) & " : ", myComp.IndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            Ü : ", myComp.IndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase), - 1)
      PrintMarker("            ü : ", myComp.IndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase), - 1)

      myT1 = New [String]("-"c, myStr.Length - [iS] - 1)
      Console.WriteLine("LastIndexOf( String, *, {0}, * )", [iS])
      Console.WriteLine("Original      : {0}", myStr)
      Console.WriteLine("No options    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS]))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS]))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS]))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS]))
      Console.WriteLine("Ordinal       : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.Ordinal))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.Ordinal))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.Ordinal))
      Console.WriteLine("IgnoreCase    : {0}{1}", myStr.Substring(0, [iS] + 1), myT1)
      PrintMarker("           U" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "U" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("           u" & ChrW(&H0308) & " : ", - 1, myComp.LastIndexOf(myStr, "u" & ChrW(&H0308), [iS], CompareOptions.IgnoreCase))
      PrintMarker("            Ü : ", - 1, myComp.LastIndexOf(myStr, "Ü"c, [iS], CompareOptions.IgnoreCase))
      PrintMarker("            ü : ", - 1, myComp.LastIndexOf(myStr, "ü"c, [iS], CompareOptions.IgnoreCase))

   End Sub

   Public Shared Sub PrintMarker(Prefix As [String], First As Integer, Last As Integer)

      ' Determines the size of the array to create.
      Dim mySize As Integer
      If Last > First Then
         mySize = Last
      Else
         mySize = First
      End If 

      If mySize > - 1 Then

         ' Creates an array of Char to hold the markers.
         Dim myCharArr(mySize + 1) As [Char]

         ' Inserts the appropriate markers.
         If First > - 1 Then
            myCharArr(First) = "f"c
         End If
         If Last > - 1 Then
            myCharArr(Last) = "l"c
         End If
         If First = Last Then
            myCharArr(First) = "b"c
         End If 

         ' Displays the array of Char as a String.
         Console.WriteLine("{0}{1}", Prefix, New [String](myCharArr))
      
      Else
         Console.WriteLine(Prefix)

      End If 

   End Sub

End Class


'This code produces the following output.
'
'IndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                              f
'            Æ :                         f
'            æ :                              f
'Ordinal       : -------------------- as Æ or æ?
'           AE :
'           ae :
'            Æ :                         f
'            æ :                              f
'IgnoreCase    : -------------------- as Æ or æ?
'           AE :                         f
'           ae :                         f
'            Æ :                         f
'            æ :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is AE or ae the same as Æ or æ?
'No options    : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :    l
'            æ :          l
'Ordinal       : Is AE or ae the same ----------
'           AE :    l
'           ae :          l
'            Æ :
'            æ :
'IgnoreCase    : Is AE or ae the same ----------
'           AE :          l
'           ae :          l
'            Æ :          l
'            æ :          l
'
'IndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                              f
'            Ü :                         f
'            ü :                              f
'Ordinal       : -------------------- as Ü or ü?
'           U" :
'           u" :
'            Ü :                         f
'            ü :                              f
'IgnoreCase    : -------------------- as Ü or ü?
'           U" :                         f
'           u" :                         f
'            Ü :                         f
'            ü :                         f
'LastIndexOf( String, *, 20, * )
'Original      : Is U" or u" the same as Ü or ü?
'No options    : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :    l
'            ü :          l
'Ordinal       : Is U" or u" the same ----------
'           U" :    l
'           u" :          l
'            Ü :
'            ü :
'IgnoreCase    : Is U" or u" the same ----------
'           U" :          l
'           u" :          l
'            Ü :          l
'            ü :          l

Hinweise

Die Quellzeichenfolge wird rückwärts gesucht, beginnend am startIndex Anfang und endend am Anfang der Zeichenfolge.

Hinweis

Hinweise für Aufrufer

Zeichensätze enthalten ignorierbare Zeichen, bei denen es sich um Zeichen handelt, die beim Ausführen einer linguistischen oder kulturabhängigen Sortierung nicht berücksichtigt werden. Bei einer kulturabhängige Suche, bei der value ein ignorierbares Zeichen enthält, ist das Ergebnis das gleiche wie bei einer Suche ohne dieses Zeichen. Wenn value nur aus einem oder mehreren ignorierbaren Zeichen besteht, gibt startIndexdie LastIndexOf(String, String, Int32) Methode immer zurück. Dies ist die Zeichenposition, an der die Suche beginnt. Im folgenden Beispiel wird die LastIndexOf(String, String, Int32) -Methode verwendet, um eine Teilzeichenfolge zu suchen, die einen weichen Bindestrich (U+00AD) enthält und das endgültige "m" vorangestellt oder in eine Zeichenfolge einschließt. Da der weiche Bindestrich in der Suchzeichenfolge ignoriert wird, gibt das Aufrufen der -Methode, um eine Teilzeichenfolge zu finden, die aus dem weichen Bindestrich besteht, und "m" die Position des "m" in der Zeichenfolge zurück, während der Aufruf sie zur Suche nach einer Teilzeichenfolge, die aus dem weichen Bindestrich besteht, und "n" die Position des "n" zurückgibt. Wenn die Suchzeichenfolge nur den weichen Bindestrich enthält, gibt die -Methode den Index des "m" zurück, der den Wert von startIndexdarstellt.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      CompareInfo ci = CultureInfo.CurrentCulture.CompareInfo;

      int position = 0;

      string s1 = "ani\u00ADmal";
      string s2 = "animal";

      // Find the index of the soft hyphen.
      position = ci.LastIndexOf(s1, "m");
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, "\u00AD", position));

      position = ci.LastIndexOf(s2, "m");
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, "\u00AD", position));

      // Find the index of the soft hyphen followed by "n".
      position = ci.LastIndexOf(s1, "m");
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, "\u00ADn", position));

      position = ci.LastIndexOf(s2, "m");
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, "\u00ADn", position));

      // Find the index of the soft hyphen followed by "m".
      position = ci.LastIndexOf(s1, "m");
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s1, "\u00ADm", position));

      position = ci.LastIndexOf(s2, "m");
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(ci.LastIndexOf(s2, "\u00ADm", position));
   }
}
// The example displays the following output:
//       'm' at position 4
//       4
//       'm' at position 3
//       3
//       'm' at position 4
//       1
//       'm' at position 3
//       1
//       'm' at position 4
//       4
//       'm' at position 3
//       3

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      
      Dim position As Integer
      Dim softHyphen As String = ChrW(&h00AD)
      
      Dim s1 As String = "ani" + softHyphen + "mal"
      Dim s2 As String = "animal"
      
      ' Find the index of the soft hyphen.
      position = ci.LastIndexOf(s1, "m")
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen, position))
      End If
         
      position = ci.LastIndexOf(s2, "m")
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen, position))
      End If
      
      ' Find the index of the soft hyphen followed by "n".
      position = ci.LastIndexOf(s1, "m")
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "n", position))
      End If
         
      position = ci.LastIndexOf(s2, "m")
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "n", position))
      End If
      
      ' Find the index of the soft hyphen followed by "m".
      position = ci.LastIndexOf(s1, "m")
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s1, softHyphen + "m", position))
      End If
      
      position = ci.LastIndexOf(s2, "m")
      Console.WriteLine("'m' at position {0}", position)
      If position >= 0 Then
         Console.WriteLine(ci.LastIndexOf(s2, softHyphen + "m", position))
      End If
   End Sub
End Module
' The example displays the following output:
'       'm' at position 4
'       4
'       'm' at position 3
'       3
'       'm' at position 4
'       1
'       'm' at position 3
'       1
'       'm' at position 4
'       4
'       'm' at position 3
'       3

Weitere Informationen

IndexOf(String, Char)

Gilt für:

Teilen über

CompareInfo.LastIndexOf Methode

Definition

Überlädt

LastIndexOf(String, String, Int32, Int32, CompareOptions)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer

Weitere Informationen

Gilt für:

LastIndexOf(String, Char, Int32, Int32, CompareOptions)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer

Weitere Informationen

Gilt für:

LastIndexOf(String, String, Int32, Int32)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer

Weitere Informationen

Gilt für:

LastIndexOf(String, String, Int32, CompareOptions)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer

Weitere Informationen

Gilt für:

LastIndexOf(String, Char, Int32, Int32)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer

Weitere Informationen

Gilt für:

LastIndexOf(String, Char, Int32, CompareOptions)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer

Weitere Informationen

Gilt für:

LastIndexOf(ReadOnlySpan<Char>, ReadOnlySpan<Char>, CompareOptions, Int32)

Parameter

Gibt zurück

Ausnahmen

Hinweise

Gilt für:

LastIndexOf(String, Char)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer

Weitere Informationen

Gilt für:

LastIndexOf(String, String, CompareOptions)

Parameter

Gibt zurück

Ausnahmen

Beispiele

Hinweise

Hinweise für Aufrufer