CompareInfo.Compare 方法

定义

比较两个字符串。

重载

Compare(String, String)

比较两个字符串。

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

比较字符的两个只读范围。

Compare(String, String, CompareOptions)

使用指定的 CompareOptions 值比较两个字符串。

Compare(String, Int32, String, Int32)

将一个字符串的结尾部分与另一个字符串的结尾部分相比较。

Compare(String, Int32, String, Int32, CompareOptions)

使用指定的 CompareOptions 值将一个字符串的结尾部分与另一个字符串的结尾部分相比较。

Compare(String, Int32, Int32, String, Int32, Int32)

将一个字符串的一部分与另一个字符串的一部分相比较。

Compare(String, Int32, Int32, String, Int32, Int32, CompareOptions)

使用指定的 CompareOptions 值将一个字符串的一部分与另一个字符串的一部分相比较。

Compare(String, String)

比较两个字符串。

public:
 virtual int Compare(System::String ^ string1, System::String ^ string2);
public:
 int Compare(System::String ^ string1, System::String ^ string2);
public virtual int Compare (string string1, string string2);
public int Compare (string? string1, string? string2);
public virtual int Compare (string? string1, string? string2);
abstract member Compare : string * string -> int
override this.Compare : string * string -> int
member this.Compare : string * string -> int
Public Overridable Function Compare (string1 As String, string2 As String) As Integer
Public Function Compare (string1 As String, string2 As String) As Integer

参数

string1
String

要比较的第一个字符串。

string2
String

要比较的第二个字符串。

返回

Int32

一个 32 位有符号整数,指示两个比较数之间的词法关系。

条件
这两个字符串相等。
小于零string1 小于 string2
大于零string1 大于 string2

示例

以下示例使用不同的 CompareInfo 对象比较两个字符串的部分:

// The following code example compares two strings using the different CompareInfo instances:
//    a CompareInfo instance associated with the S"Spanish - Spain" culture with international sort,
//    a CompareInfo instance associated with the S"Spanish - Spain" culture with traditional sort, and
//    a CompareInfo instance associated with the InvariantCulture.
using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Defines the strings to compare.
   String^ myStr1 = "calle";
   String^ myStr2 = "calor";
   
   // Uses GetCompareInfo to create the CompareInfo that 
   // uses the S"es-ES" culture with international sort.
   CompareInfo^ myCompIntl = CompareInfo::GetCompareInfo( "es-ES" );
   
   // Uses GetCompareInfo to create the CompareInfo that 
   // uses the S"es-ES" culture with traditional sort.
   CompareInfo^ myCompTrad = CompareInfo::GetCompareInfo( 0x040A );
   
   // Uses the CompareInfo property of the InvariantCulture.
   CompareInfo^ myCompInva = CultureInfo::InvariantCulture->CompareInfo;
   
   // Compares two strings using myCompIntl.
   Console::WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1, myStr2 );
   Console::WriteLine( "   With myCompIntl::Compare: {0}", myCompIntl->Compare( myStr1, myStr2 ) );
   Console::WriteLine( "   With myCompTrad::Compare: {0}", myCompTrad->Compare( myStr1, myStr2 ) );
   Console::WriteLine( "   With myCompInva::Compare: {0}", myCompInva->Compare( myStr1, myStr2 ) );
}

/*
This code produces the following output.

Comparing "calle" and "calor"
   With myCompIntl::Compare: -1
   With myCompTrad::Compare: 1
   With myCompInva::Compare: -1
*/
// The following code example compares two strings using the different CompareInfo instances:
//    a CompareInfo instance associated with the "Spanish - Spain" culture with international sort,
//    a CompareInfo instance associated with the "Spanish - Spain" culture with traditional sort, and
//    a CompareInfo instance associated with the InvariantCulture.

using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Defines the strings to compare.
      String myStr1 = "calle";
      String myStr2 = "calor";

      // Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with international sort.
      CompareInfo myCompIntl = CompareInfo.GetCompareInfo( "es-ES" );

      // Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with traditional sort.
      CompareInfo myCompTrad = CompareInfo.GetCompareInfo( 0x040A );

      // Uses the CompareInfo property of the InvariantCulture.
      CompareInfo myCompInva = CultureInfo.InvariantCulture.CompareInfo;

      // Compares two strings using myCompIntl.
      Console.WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1, myStr2 );
      Console.WriteLine( "   With myCompIntl.Compare: {0}", myCompIntl.Compare( myStr1, myStr2 ) );
      Console.WriteLine( "   With myCompTrad.Compare: {0}", myCompTrad.Compare( myStr1, myStr2 ) );
      Console.WriteLine( "   With myCompInva.Compare: {0}", myCompInva.Compare( myStr1, myStr2 ) );
   }
}


/*
This code produces the following output.

Comparing "calle" and "calor"
   With myCompIntl.Compare: -1
   With myCompTrad.Compare: 1
   With myCompInva.Compare: -1

*/
' The following code example compares two strings using the different CompareInfo instances:
'    a CompareInfo instance associated with the "Spanish - Spain" culture with international sort,
'    a CompareInfo instance associated with the "Spanish - Spain" culture with traditional sort, and
'    a CompareInfo instance associated with the InvariantCulture.

Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Defines the strings to compare.
      Dim myStr1 As [String] = "calle"
      Dim myStr2 As [String] = "calor"

      ' Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with international sort.
      Dim myCompIntl As CompareInfo = CompareInfo.GetCompareInfo("es-ES")

      ' Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with traditional sort.
      Dim myCompTrad As CompareInfo = CompareInfo.GetCompareInfo(&H40A)

      ' Uses the CompareInfo property of the InvariantCulture.
      Dim myCompInva As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Compares two strings using myCompIntl.
      Console.WriteLine("Comparing ""{0}"" and ""{1}""", myStr1, myStr2)
      Console.WriteLine("   With myCompIntl.Compare: {0}", myCompIntl.Compare(myStr1, myStr2))
      Console.WriteLine("   With myCompTrad.Compare: {0}", myCompTrad.Compare(myStr1, myStr2))
      Console.WriteLine("   With myCompInva.Compare: {0}", myCompInva.Compare(myStr1, myStr2))

   End Sub

End Class


'This code produces the following output.
'
'Comparing "calle" and "calor"
'   With myCompIntl.Compare: -1
'   With myCompTrad.Compare: 1
'   With myCompInva.Compare: -1

下面的示例演示如何调用 Compare 方法。

using namespace System;
using namespace System::Text;
using namespace System::Globalization;

int main()
{
    array<String^>^ sign = gcnew array<String^> { "<", "=", ">" };

    // The code below demonstrates how strings compare
    // differently for different cultures.
    String^ s1 = "Coté"; 
    String^ s2 = "coté";
    String^ s3 = "côte";

    // Set sort order of strings for French in France.
    CompareInfo^ ci = (gcnew CultureInfo("fr-FR"))->CompareInfo;
    Console::WriteLine(L"The LCID for {0} is {1}.", ci->Name, ci->LCID);

    // Display the result using fr-FR Compare of Coté = coté.
    Console::WriteLine(L"fr-FR Compare: {0} {2} {1}",
        s1, s2, sign[ci->Compare(s1, s2, CompareOptions::IgnoreCase) + 1]);

    // Display the result using fr-FR Compare of coté > côte.
    Console::WriteLine(L"fr-FR Compare: {0} {2} {1}",
        s2, s3, sign[ci->Compare(s2, s3, CompareOptions::None) + 1]);

    // Set sort order of strings for Japanese as spoken in Japan.
    ci = (gcnew CultureInfo("ja-JP"))->CompareInfo;
    Console::WriteLine(L"The LCID for {0} is {1}.", ci->Name, ci->LCID);

    // Display the result using ja-JP Compare of coté < côte.
    Console::WriteLine("ja-JP Compare: {0} {2} {1}",
        s2, s3, sign[ci->Compare(s2, s3) + 1]);
}

// This code produces the following output.
//
// The LCID for fr-FR is 1036.
// fr-FR Compare: Coté = coté
// fr-FR Compare: coté > côte
// The LCID for ja-JP is 1041.
// ja-JP Compare: coté < côte
using System;
using System.Text;
using System.Globalization;

public sealed class App
{
    static void Main(string[] args)
    {
        String[] sign = new String[] { "<", "=", ">" };

        // The code below demonstrates how strings compare
        // differently for different cultures.
        String s1 = "Coté", s2 = "coté", s3 = "côte";

        // Set sort order of strings for French in France.
        CompareInfo ci = new CultureInfo("fr-FR").CompareInfo;
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID);

        // Display the result using fr-FR Compare of Coté = coté.  	
        Console.WriteLine("fr-FR Compare: {0} {2} {1}",
            s1, s2, sign[ci.Compare(s1, s2, CompareOptions.IgnoreCase) + 1]);

        // Display the result using fr-FR Compare of coté > côte.
        Console.WriteLine("fr-FR Compare: {0} {2} {1}",
            s2, s3, sign[ci.Compare(s2, s3, CompareOptions.None) + 1]);

        // Set sort order of strings for Japanese as spoken in Japan.
        ci = new CultureInfo("ja-JP").CompareInfo;
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID);

        // Display the result using ja-JP Compare of coté < côte.
        Console.WriteLine("ja-JP Compare: {0} {2} {1}",
            s2, s3, sign[ci.Compare(s2, s3) + 1]);
    }
}

// This code produces the following output.
//
// The LCID for fr-FR is 1036.
// fr-FR Compare: Coté = coté
// fr-FR Compare: coté > côte
// The LCID for ja-JP is 1041.
// ja-JP Compare: coté < côte
Imports System.Text
Imports System.Globalization

NotInheritable Public Class App
    Shared Sub Main(ByVal args() As String) 
        Dim sign() As String = {"<", "=", ">"}
        
        ' The code below demonstrates how strings compare 
        ' differently for different cultures.
        Dim s1 As String = "Coté"
        Dim s2 As String = "coté"
        Dim s3 As String = "côte"
        
        ' Set sort order of strings for French in France.
        Dim ci As CompareInfo = New CultureInfo("fr-FR").CompareInfo
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID)
        
        ' Display the result using fr-FR Compare of Coté = coté.  	
        Console.WriteLine("fr-FR Compare: {0} {2} {1}", _
                          s1, s2, sign((ci.Compare(s1, s2, CompareOptions.IgnoreCase) + 1)))
        
        ' Display the result using fr-FR Compare of coté > côte.
        Console.WriteLine("fr-FR Compare: {0} {2} {1}", _
                          s2, s3, sign((ci.Compare(s2, s3, CompareOptions.None) + 1)))
        
        ' Set sort order of strings for Japanese as spoken in Japan.
        ci = New CultureInfo("ja-JP").CompareInfo
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID)
        
        ' Display the result using ja-JP Compare of coté < côte. 
        Console.WriteLine("ja-JP Compare: {0} {2} {1}", _
                          s2, s3, sign((ci.Compare(s2, s3) + 1)))
    End Sub
End Class

' This code produces the following output.
' 
' The LCID for fr-FR is 1036.
' fr-FR Compare: Coté = coté
' fr-FR Compare: coté > côte
' The LCID for ja-JP is 1041.
' ja-JP Compare: coté < côte

注解

默认情况下,使用 CompareOptions.None执行比较。 如果安全决策依赖于字符串比较或大小写更改,则应使用 InvariantCulture 属性来确保无论操作系统的区域性设置如何,行为都是一致的。

备注

如果可能,应调用具有 类型 CompareOptions 参数的字符串比较方法,以指定预期的比较类型。 一般情况下,使用语言选项 (使用当前区域性) 来比较用户界面中显示的字符串,并指定 OrdinalOrdinalIgnoreCase 进行安全比较。

调用方说明

字符集包括可忽略字符,在执行语言性的或区分区域性的比较时该字符不被考虑。 方法 Compare(String, String) 在执行区分区域性的比较时不考虑此类字符。 例如,使用软连字符或 U+00AD) 对“animal”与“ani-mal” (进行区分区域性的比较表明这两个字符串是等效的,如以下示例所示。

Imports System.Globalization

Module Example
   Public Sub Main()
      Dim ci As CompareInfo = CultureInfo.CurrentCulture.CompareInfo
      Dim s1 As String = "ani" + ChrW(&h00AD) + "mal"
      Dim s2 As String = "animal"
      
      Console.WriteLine("Comparison of '{0}' and '{1}': {2}", 
                        s1, s2, ci.Compare(s1, s2))
  End Sub
End Module
' The example displays the following output:
'       Comparison of 'ani-mal' and 'animal': 0

若要识别字符串比较中的可忽略字符,请调用 Compare(String, String, CompareOptions) 方法并为 参数提供 或 OrdinalIgnoreCaseoptionsOrdinal

适用于

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

比较字符的两个只读范围。

public int Compare (ReadOnlySpan<char> string1, ReadOnlySpan<char> string2, System.Globalization.CompareOptions options = System.Globalization.CompareOptions.None);
member this.Compare : ReadOnlySpan<char> * ReadOnlySpan<char> * System.Globalization.CompareOptions -> int
Public Function Compare (string1 As ReadOnlySpan(Of Char), string2 As ReadOnlySpan(Of Char), Optional options As CompareOptions = System.Globalization.CompareOptions.None) As Integer

参数

string1
ReadOnlySpan<Char>

要比较的第一个字符只读范围。

string2
ReadOnlySpan<Char>

要比较的第二个字符只读范围。

options
CompareOptions

要在比较过程中使用的 CompareOptions 枚举值的可选组合。 默认值是 None

返回

Int32

如果 string1string2 相等,则为零;如果在 string1 排序在 string2 之前,则为负值;如果 string1 排序在 string2 之后,则为正值。

例外

options 包含不受支持的标志组合。

适用于

Compare(String, String, CompareOptions)

使用指定的 CompareOptions 值比较两个字符串。

public:
 virtual int Compare(System::String ^ string1, System::String ^ string2, System::Globalization::CompareOptions options);
public:
 int Compare(System::String ^ string1, System::String ^ string2, System::Globalization::CompareOptions options);
public virtual int Compare (string string1, string string2, System.Globalization.CompareOptions options);
public int Compare (string? string1, string? string2, System.Globalization.CompareOptions options);
public virtual int Compare (string? string1, string? string2, System.Globalization.CompareOptions options);
abstract member Compare : string * string * System.Globalization.CompareOptions -> int
override this.Compare : string * string * System.Globalization.CompareOptions -> int
member this.Compare : string * string * System.Globalization.CompareOptions -> int
Public Overridable Function Compare (string1 As String, string2 As String, options As CompareOptions) As Integer
Public Function Compare (string1 As String, string2 As String, options As CompareOptions) As Integer

参数

string1
String

要比较的第一个字符串。

string2
String

要比较的第二个字符串。

options
CompareOptions

一个值,用于定义应如何比较 string1string2options 可以为枚举值 Ordinal,或为以下一个或多个值的按位组合:IgnoreCaseIgnoreSymbolsIgnoreNonSpaceIgnoreWidthIgnoreKanaTypeStringSort

返回

Int32

一个 32 位有符号整数,指示两个比较数之间的词法关系。

条件
这两个字符串相等。
小于零string1 小于 string2
大于零string1 大于 string2

例外

options 包含无效的 CompareOptions 值。

示例

以下示例使用不同的 CompareOptions 设置比较两个字符串。

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Defines the strings to compare.
   String^ myStr1 = "My Uncle Bill's clients";
   String^ myStr2 = "My uncle bills clients";
   
   // Creates a CompareInfo which uses the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // Compares two strings using myComp.
   Console::WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1, myStr2 );
   Console::WriteLine( "   With no CompareOptions            : {0}", myComp->Compare( myStr1, myStr2 ) );
   Console::WriteLine( "   With None                         : {0}", myComp->Compare( myStr1, myStr2, CompareOptions::None ) );
   Console::WriteLine( "   With Ordinal                      : {0}", myComp->Compare( myStr1, myStr2, CompareOptions::Ordinal ) );
   Console::WriteLine( "   With StringSort                   : {0}", myComp->Compare( myStr1, myStr2, CompareOptions::StringSort ) );
   Console::WriteLine( "   With IgnoreCase                   : {0}", myComp->Compare( myStr1, myStr2, CompareOptions::IgnoreCase ) );
   Console::WriteLine( "   With IgnoreSymbols                : {0}", myComp->Compare( myStr1, myStr2, CompareOptions::IgnoreSymbols ) );
   Console::WriteLine( "   With IgnoreCase and IgnoreSymbols : {0}", myComp->Compare( myStr1, myStr2, static_cast<CompareOptions>(CompareOptions::IgnoreCase | CompareOptions::IgnoreSymbols) ) );
}

/*
This code produces the following output.

Comparing "My Uncle Bill's clients" and "My uncle bills clients"
   With no CompareOptions            : 1
   With None                         : 1
   With Ordinal                      : -32
   With StringSort                   : -1
   With IgnoreCase                   : 1
   With IgnoreSymbols                : 1
   With IgnoreCase and IgnoreSymbols : 0
*/
using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Defines the strings to compare.
      String myStr1 = "My Uncle Bill's clients";
      String myStr2 = "My uncle bills clients";

      // Creates a CompareInfo that uses the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // Compares two strings using myComp.
      Console.WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1, myStr2 );
      Console.WriteLine( "   With no CompareOptions            : {0}", myComp.Compare( myStr1, myStr2 ) );
      Console.WriteLine( "   With None                         : {0}", myComp.Compare( myStr1, myStr2, CompareOptions.None ) );
      Console.WriteLine( "   With Ordinal                      : {0}", myComp.Compare( myStr1, myStr2, CompareOptions.Ordinal ) );
      Console.WriteLine( "   With StringSort                   : {0}", myComp.Compare( myStr1, myStr2, CompareOptions.StringSort ) );
      Console.WriteLine( "   With IgnoreCase                   : {0}", myComp.Compare( myStr1, myStr2, CompareOptions.IgnoreCase ) );
      Console.WriteLine( "   With IgnoreSymbols                : {0}", myComp.Compare( myStr1, myStr2, CompareOptions.IgnoreSymbols ) );
      Console.WriteLine( "   With IgnoreCase and IgnoreSymbols : {0}", myComp.Compare( myStr1, myStr2, CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols ) );
   }
}


/*
This code produces the following output.

Comparing "My Uncle Bill's clients" and "My uncle bills clients"
   With no CompareOptions            : 1
   With None                         : 1
   With Ordinal                      : -32
   With StringSort                   : -1
   With IgnoreCase                   : 1
   With IgnoreSymbols                : 1
   With IgnoreCase and IgnoreSymbols : 0

*/
Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Defines the strings to compare.
      Dim myStr1 As [String] = "My Uncle Bill's clients"
      Dim myStr2 As [String] = "My uncle bills clients"

      ' Creates a CompareInfo that uses the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Compares two strings using myComp.
      Console.WriteLine("Comparing ""{0}"" and ""{1}""", myStr1, myStr2)
      Console.WriteLine("   With no CompareOptions            : {0}", myComp.Compare(myStr1, myStr2))
      Console.WriteLine("   With None                         : {0}", myComp.Compare(myStr1, myStr2, CompareOptions.None))
      Console.WriteLine("   With Ordinal                      : {0}", myComp.Compare(myStr1, myStr2, CompareOptions.Ordinal))
      Console.WriteLine("   With StringSort                   : {0}", myComp.Compare(myStr1, myStr2, CompareOptions.StringSort))
      Console.WriteLine("   With IgnoreCase                   : {0}", myComp.Compare(myStr1, myStr2, CompareOptions.IgnoreCase))
      Console.WriteLine("   With IgnoreSymbols                : {0}", myComp.Compare(myStr1, myStr2, CompareOptions.IgnoreSymbols))
      Console.WriteLine("   With IgnoreCase and IgnoreSymbols : {0}", myComp.Compare(myStr1, myStr2, CompareOptions.IgnoreCase Or CompareOptions.IgnoreSymbols))

   End Sub

End Class


'This code produces the following output.
'
'Comparing "My Uncle Bill's clients" and "My uncle bills clients"
'   With no CompareOptions            : 1
'   With None                         : 1
'   With Ordinal                      : -32
'   With StringSort                   : -1
'   With IgnoreCase                   : 1
'   With IgnoreSymbols                : 1
'   With IgnoreCase and IgnoreSymbols : 0

下面的示例演示如何调用 Compare 方法。

using namespace System;
using namespace System::Text;
using namespace System::Globalization;

int main()
{
    array<String^>^ sign = gcnew array<String^> { "<", "=", ">" };

    // The code below demonstrates how strings compare
    // differently for different cultures.
    String^ s1 = "Coté"; 
    String^ s2 = "coté";
    String^ s3 = "côte";

    // Set sort order of strings for French in France.
    CompareInfo^ ci = (gcnew CultureInfo("fr-FR"))->CompareInfo;
    Console::WriteLine(L"The LCID for {0} is {1}.", ci->Name, ci->LCID);

    // Display the result using fr-FR Compare of Coté = coté.
    Console::WriteLine(L"fr-FR Compare: {0} {2} {1}",
        s1, s2, sign[ci->Compare(s1, s2, CompareOptions::IgnoreCase) + 1]);

    // Display the result using fr-FR Compare of coté > côte.
    Console::WriteLine(L"fr-FR Compare: {0} {2} {1}",
        s2, s3, sign[ci->Compare(s2, s3, CompareOptions::None) + 1]);

    // Set sort order of strings for Japanese as spoken in Japan.
    ci = (gcnew CultureInfo("ja-JP"))->CompareInfo;
    Console::WriteLine(L"The LCID for {0} is {1}.", ci->Name, ci->LCID);

    // Display the result using ja-JP Compare of coté < côte.
    Console::WriteLine("ja-JP Compare: {0} {2} {1}",
        s2, s3, sign[ci->Compare(s2, s3) + 1]);
}

// This code produces the following output.
//
// The LCID for fr-FR is 1036.
// fr-FR Compare: Coté = coté
// fr-FR Compare: coté > côte
// The LCID for ja-JP is 1041.
// ja-JP Compare: coté < côte
using System;
using System.Text;
using System.Globalization;

public sealed class App
{
    static void Main(string[] args)
    {
        String[] sign = new String[] { "<", "=", ">" };

        // The code below demonstrates how strings compare
        // differently for different cultures.
        String s1 = "Coté", s2 = "coté", s3 = "côte";

        // Set sort order of strings for French in France.
        CompareInfo ci = new CultureInfo("fr-FR").CompareInfo;
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID);

        // Display the result using fr-FR Compare of Coté = coté.  	
        Console.WriteLine("fr-FR Compare: {0} {2} {1}",
            s1, s2, sign[ci.Compare(s1, s2, CompareOptions.IgnoreCase) + 1]);

        // Display the result using fr-FR Compare of coté > côte.
        Console.WriteLine("fr-FR Compare: {0} {2} {1}",
            s2, s3, sign[ci.Compare(s2, s3, CompareOptions.None) + 1]);

        // Set sort order of strings for Japanese as spoken in Japan.
        ci = new CultureInfo("ja-JP").CompareInfo;
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID);

        // Display the result using ja-JP Compare of coté < côte.
        Console.WriteLine("ja-JP Compare: {0} {2} {1}",
            s2, s3, sign[ci.Compare(s2, s3) + 1]);
    }
}

// This code produces the following output.
//
// The LCID for fr-FR is 1036.
// fr-FR Compare: Coté = coté
// fr-FR Compare: coté > côte
// The LCID for ja-JP is 1041.
// ja-JP Compare: coté < côte
Imports System.Text
Imports System.Globalization

NotInheritable Public Class App
    Shared Sub Main(ByVal args() As String) 
        Dim sign() As String = {"<", "=", ">"}
        
        ' The code below demonstrates how strings compare 
        ' differently for different cultures.
        Dim s1 As String = "Coté"
        Dim s2 As String = "coté"
        Dim s3 As String = "côte"
        
        ' Set sort order of strings for French in France.
        Dim ci As CompareInfo = New CultureInfo("fr-FR").CompareInfo
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID)
        
        ' Display the result using fr-FR Compare of Coté = coté.  	
        Console.WriteLine("fr-FR Compare: {0} {2} {1}", _
                          s1, s2, sign((ci.Compare(s1, s2, CompareOptions.IgnoreCase) + 1)))
        
        ' Display the result using fr-FR Compare of coté > côte.
        Console.WriteLine("fr-FR Compare: {0} {2} {1}", _
                          s2, s3, sign((ci.Compare(s2, s3, CompareOptions.None) + 1)))
        
        ' Set sort order of strings for Japanese as spoken in Japan.
        ci = New CultureInfo("ja-JP").CompareInfo
        Console.WriteLine("The LCID for {0} is {1}.", ci.Name, ci.LCID)
        
        ' Display the result using ja-JP Compare of coté < côte. 
        Console.WriteLine("ja-JP Compare: {0} {2} {1}", _
                          s2, s3, sign((ci.Compare(s2, s3) + 1)))
    End Sub
End Class

' This code produces the following output.
' 
' The LCID for fr-FR is 1036.
' fr-FR Compare: Coté = coté
' fr-FR Compare: coté > côte
' The LCID for ja-JP is 1041.
' ja-JP Compare: coté < côte

注解

如果安全决策依赖于字符串比较或大小写更改,则应使用 InvariantCulture 属性来确保无论操作系统的区域性设置如何,行为都是一致的。

备注

如果可能,应调用具有 类型 CompareOptions 参数的字符串比较方法,以指定预期的比较类型。 一般情况下,使用语言选项 (使用当前区域性) 来比较用户界面中显示的字符串,并指定 OrdinalOrdinalIgnoreCase 进行安全比较。

调用方说明

字符集包括可忽略字符,在执行语言性的或区分区域性的比较时该字符不被考虑。 方法 Compare(String, String, CompareOptions) 在执行区分区域性的比较时不考虑此类字符。 若要识别比较中的可忽略字符,请为 options 参数提供 或 OrdinalIgnoreCaseOrdinal

另请参阅

适用于

Compare(String, Int32, String, Int32)

将一个字符串的结尾部分与另一个字符串的结尾部分相比较。

public:
 virtual int Compare(System::String ^ string1, int offset1, System::String ^ string2, int offset2);
public:
 int Compare(System::String ^ string1, int offset1, System::String ^ string2, int offset2);
public virtual int Compare (string string1, int offset1, string string2, int offset2);
public int Compare (string? string1, int offset1, string? string2, int offset2);
public virtual int Compare (string? string1, int offset1, string? string2, int offset2);
abstract member Compare : string * int * string * int -> int
override this.Compare : string * int * string * int -> int
member this.Compare : string * int * string * int -> int
Public Overridable Function Compare (string1 As String, offset1 As Integer, string2 As String, offset2 As Integer) As Integer
Public Function Compare (string1 As String, offset1 As Integer, string2 As String, offset2 As Integer) As Integer

参数

string1
String

要比较的第一个字符串。

offset1
Int32

string1 中的字符从零开始的索引,将从此位置开始比较。

string2
String

要比较的第二个字符串。

offset2
Int32

string2 中的字符从零开始的索引,将从此位置开始比较。

返回

Int32

一个 32 位有符号整数,指示两个比较数之间的词法关系。

条件
这两个字符串相等。
小于零 string1 的指定部分小于 string2 的指定部分。
大于零 string1 的指定部分大于 string2 的指定部分。

例外

offset1offset2 小于零。

- 或 -

offset1 大于或等于 string1 中的字符数。

- 或 -

offset2 大于或等于 string2 中的字符数。

示例

以下示例使用不同的 CompareInfo 对象比较两个字符串的部分:

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Defines the strings to compare.
   String^ myStr1 = "calle";
   String^ myStr2 = "calor";
   
   // Uses GetCompareInfo to create the CompareInfo that 
   // uses the S"es-ES" culture with international sort.
   CompareInfo^ myCompIntl = CompareInfo::GetCompareInfo( "es-ES" );
   
   // Uses GetCompareInfo to create the CompareInfo that 
   // uses the S"es-ES" culture with traditional sort.
   CompareInfo^ myCompTrad = CompareInfo::GetCompareInfo( 0x040A );
   
   // Uses the CompareInfo property of the InvariantCulture.
   CompareInfo^ myCompInva = CultureInfo::InvariantCulture->CompareInfo;
   
   // Compares two strings using myCompIntl.
   Console::WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1->Substring( 2 ), myStr2->Substring( 2 ) );
   Console::WriteLine( "   With myCompIntl::Compare: {0}", myCompIntl->Compare( myStr1, 2, myStr2, 2 ) );
   Console::WriteLine( "   With myCompTrad::Compare: {0}", myCompTrad->Compare( myStr1, 2, myStr2, 2 ) );
   Console::WriteLine( "   With myCompInva::Compare: {0}", myCompInva->Compare( myStr1, 2, myStr2, 2 ) );
}

/*
This code produces the following output.

Comparing "lle" and "lor"
   With myCompIntl::Compare: -1
   With myCompTrad::Compare: 1
   With myCompInva::Compare: -1
*/
using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Defines the strings to compare.
      String myStr1 = "calle";
      String myStr2 = "calor";

      // Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with international sort.
      CompareInfo myCompIntl = CompareInfo.GetCompareInfo( "es-ES" );

      // Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with traditional sort.
      CompareInfo myCompTrad = CompareInfo.GetCompareInfo( 0x040A );

      // Uses the CompareInfo property of the InvariantCulture.
      CompareInfo myCompInva = CultureInfo.InvariantCulture.CompareInfo;

      // Compares two strings using myCompIntl.
      Console.WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1.Substring( 2 ), myStr2.Substring( 2 ) );
      Console.WriteLine( "   With myCompIntl.Compare: {0}", myCompIntl.Compare( myStr1, 2, myStr2, 2 ) );
      Console.WriteLine( "   With myCompTrad.Compare: {0}", myCompTrad.Compare( myStr1, 2, myStr2, 2 ) );
      Console.WriteLine( "   With myCompInva.Compare: {0}", myCompInva.Compare( myStr1, 2, myStr2, 2 ) );
   }
}


/*
This code produces the following output.

Comparing "lle" and "lor"
   With myCompIntl.Compare: -1
   With myCompTrad.Compare: 1
   With myCompInva.Compare: -1

*/
Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Defines the strings to compare.
      Dim myStr1 As [String] = "calle"
      Dim myStr2 As [String] = "calor"

      ' Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with international sort.
      Dim myCompIntl As CompareInfo = CompareInfo.GetCompareInfo("es-ES")

      ' Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with traditional sort.
      Dim myCompTrad As CompareInfo = CompareInfo.GetCompareInfo(&H40A)

      ' Uses the CompareInfo property of the InvariantCulture.
      Dim myCompInva As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Compares two strings using myCompIntl.
      Console.WriteLine("Comparing ""{0}"" and ""{1}""", myStr1.Substring(2), myStr2.Substring(2))
      Console.WriteLine("   With myCompIntl.Compare: {0}", myCompIntl.Compare(myStr1, 2, myStr2, 2))
      Console.WriteLine("   With myCompTrad.Compare: {0}", myCompTrad.Compare(myStr1, 2, myStr2, 2))
      Console.WriteLine("   With myCompInva.Compare: {0}", myCompInva.Compare(myStr1, 2, myStr2, 2))

   End Sub

End Class


'This code produces the following output.
'
'Comparing "lle" and "lor"
'   With myCompIntl.Compare: -1
'   With myCompTrad.Compare: 1
'   With myCompInva.Compare: -1

注解

如果安全决策依赖于字符串比较或大小写更改,则应使用 InvariantCulture 属性来确保无论操作系统的区域性设置如何,行为都是一致的。

备注

如果可能,应调用具有 类型 CompareOptions 参数的字符串比较方法,以指定预期的比较类型。 一般情况下,使用语言选项 (使用当前区域性) 来比较用户界面中显示的字符串,并指定 OrdinalOrdinalIgnoreCase 进行安全比较。

调用方说明

字符集包括可忽略字符。 方法 Compare(String, Int32, String, Int32) 在执行语言或区分区域性的比较时不考虑这些字符。 若要识别比较中的可忽略字符,请调用 Compare(String, Int32, String, Int32, CompareOptions) 方法并为 参数提供 或 OrdinalIgnoreCaseoptionsOrdinal

适用于

Compare(String, Int32, String, Int32, CompareOptions)

使用指定的 CompareOptions 值将一个字符串的结尾部分与另一个字符串的结尾部分相比较。

public:
 virtual int Compare(System::String ^ string1, int offset1, System::String ^ string2, int offset2, System::Globalization::CompareOptions options);
public:
 int Compare(System::String ^ string1, int offset1, System::String ^ string2, int offset2, System::Globalization::CompareOptions options);
public virtual int Compare (string string1, int offset1, string string2, int offset2, System.Globalization.CompareOptions options);
public int Compare (string? string1, int offset1, string? string2, int offset2, System.Globalization.CompareOptions options);
public virtual int Compare (string? string1, int offset1, string? string2, int offset2, System.Globalization.CompareOptions options);
abstract member Compare : string * int * string * int * System.Globalization.CompareOptions -> int
override this.Compare : string * int * string * int * System.Globalization.CompareOptions -> int
member this.Compare : string * int * string * int * System.Globalization.CompareOptions -> int
Public Overridable Function Compare (string1 As String, offset1 As Integer, string2 As String, offset2 As Integer, options As CompareOptions) As Integer
Public Function Compare (string1 As String, offset1 As Integer, string2 As String, offset2 As Integer, options As CompareOptions) As Integer

参数

string1
String

要比较的第一个字符串。

offset1
Int32

string1 中的字符从零开始的索引,将从此位置开始比较。

string2
String

要比较的第二个字符串。

offset2
Int32

string2 中的字符从零开始的索引,将从此位置开始比较。

options
CompareOptions

一个值,用于定义应如何比较 string1string2options 可以为枚举值 Ordinal,或为以下一个或多个值的按位组合:IgnoreCaseIgnoreSymbolsIgnoreNonSpaceIgnoreWidthIgnoreKanaTypeStringSort

返回

Int32

一个 32 位有符号整数,指示两个比较数之间的词法关系。

条件
这两个字符串相等。
小于零 string1 的指定部分小于 string2 的指定部分。
大于零 string1 的指定部分大于 string2 的指定部分。

例外

offset1offset2 小于零。

- 或 -

offset1 大于或等于 string1 中的字符数。

- 或 -

offset2 大于或等于 string2 中的字符数。

options 包含无效的 CompareOptions 值。

示例

以下示例使用不同的 CompareOptions 设置比较两个字符串的部分。

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Defines the strings to compare.
   String^ myStr1 = "My Uncle Bill's clients";
   String^ myStr2 = "My uncle bills clients";
   
   // Creates a CompareInfo that uses the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // Compares two strings using myComp.
   Console::WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1->Substring( 10 ), myStr2->Substring( 10 ) );
   Console::WriteLine( "   With no CompareOptions            : {0}", myComp->Compare( myStr1, 10, myStr2, 10 ) );
   Console::WriteLine( "   With None                         : {0}", myComp->Compare( myStr1, 10, myStr2, 10, CompareOptions::None ) );
   Console::WriteLine( "   With Ordinal                      : {0}", myComp->Compare( myStr1, 10, myStr2, 10, CompareOptions::Ordinal ) );
   Console::WriteLine( "   With StringSort                   : {0}", myComp->Compare( myStr1, 10, myStr2, 10, CompareOptions::StringSort ) );
   Console::WriteLine( "   With IgnoreCase                   : {0}", myComp->Compare( myStr1, 10, myStr2, 10, CompareOptions::IgnoreCase ) );
   Console::WriteLine( "   With IgnoreSymbols                : {0}", myComp->Compare( myStr1, 10, myStr2, 10, CompareOptions::IgnoreSymbols ) );
   Console::WriteLine( "   With IgnoreCase and IgnoreSymbols : {0}", myComp->Compare( myStr1, 10, myStr2, 10, static_cast<CompareOptions>(CompareOptions::IgnoreCase | CompareOptions::IgnoreSymbols) ) );
}

/*
This code produces the following output.

Comparing "ill's clients" and "ills clients"
   With no CompareOptions            : 1
   With None                         : 1
   With Ordinal                      : -76
   With StringSort                   : -1
   With IgnoreCase                   : 1
   With IgnoreSymbols                : 0
   With IgnoreCase and IgnoreSymbols : 0
*/
using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Defines the strings to compare.
      String myStr1 = "My Uncle Bill's clients";
      String myStr2 = "My uncle bills clients";

      // Creates a CompareInfo that uses the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // Compares two strings using myComp.
      Console.WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1.Substring( 10 ), myStr2.Substring( 10 ) );
      Console.WriteLine( "   With no CompareOptions            : {0}", myComp.Compare( myStr1, 10, myStr2, 10 ) );
      Console.WriteLine( "   With None                         : {0}", myComp.Compare( myStr1, 10, myStr2, 10, CompareOptions.None ) );
      Console.WriteLine( "   With Ordinal                      : {0}", myComp.Compare( myStr1, 10, myStr2, 10, CompareOptions.Ordinal ) );
      Console.WriteLine( "   With StringSort                   : {0}", myComp.Compare( myStr1, 10, myStr2, 10, CompareOptions.StringSort ) );
      Console.WriteLine( "   With IgnoreCase                   : {0}", myComp.Compare( myStr1, 10, myStr2, 10, CompareOptions.IgnoreCase ) );
      Console.WriteLine( "   With IgnoreSymbols                : {0}", myComp.Compare( myStr1, 10, myStr2, 10, CompareOptions.IgnoreSymbols ) );
      Console.WriteLine( "   With IgnoreCase and IgnoreSymbols : {0}", myComp.Compare( myStr1, 10, myStr2, 10, CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols ) );
   }
}


/*
This code produces the following output.

Comparing "ill's clients" and "ills clients"
   With no CompareOptions            : 1
   With None                         : 1
   With Ordinal                      : -76
   With StringSort                   : -1
   With IgnoreCase                   : 1
   With IgnoreSymbols                : 0
   With IgnoreCase and IgnoreSymbols : 0

*/
Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Defines the strings to compare.
      Dim myStr1 As [String] = "My Uncle Bill's clients"
      Dim myStr2 As [String] = "My uncle bills clients"

      ' Creates a CompareInfo that uses the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Compares two strings using myComp.
      Console.WriteLine("Comparing ""{0}"" and ""{1}""", myStr1.Substring(10), myStr2.Substring(10))
      Console.WriteLine("   With no CompareOptions            : {0}", myComp.Compare(myStr1, 10, myStr2, 10))
      Console.WriteLine("   With None                         : {0}", myComp.Compare(myStr1, 10, myStr2, 10, CompareOptions.None))
      Console.WriteLine("   With Ordinal                      : {0}", myComp.Compare(myStr1, 10, myStr2, 10, CompareOptions.Ordinal))
      Console.WriteLine("   With StringSort                   : {0}", myComp.Compare(myStr1, 10, myStr2, 10, CompareOptions.StringSort))
      Console.WriteLine("   With IgnoreCase                   : {0}", myComp.Compare(myStr1, 10, myStr2, 10, CompareOptions.IgnoreCase))
      Console.WriteLine("   With IgnoreSymbols                : {0}", myComp.Compare(myStr1, 10, myStr2, 10, CompareOptions.IgnoreSymbols))
      Console.WriteLine("   With IgnoreCase and IgnoreSymbols : {0}", myComp.Compare(myStr1, 10, myStr2, 10, CompareOptions.IgnoreCase Or CompareOptions.IgnoreSymbols))

   End Sub

End Class


'This code produces the following output.
'
'Comparing "ill's clients" and "ills clients"
'   With no CompareOptions            : 1
'   With None                         : 1
'   With Ordinal                      : -76
'   With StringSort                   : -1
'   With IgnoreCase                   : 1
'   With IgnoreSymbols                : 0
'   With IgnoreCase and IgnoreSymbols : 0

注解

如果安全决策依赖于字符串比较或大小写更改,则应使用 InvariantCulture 属性来确保无论操作系统的区域性设置如何,行为都是一致的。

备注

如果可能,应调用具有 类型 CompareOptions 参数的字符串比较方法,以指定预期的比较类型。 一般情况下,使用语言选项 (使用当前区域性) 来比较用户界面中显示的字符串,并指定 OrdinalOrdinalIgnoreCase 进行安全比较。

调用方说明

字符集包括可忽略字符,在执行语言性的或区分区域性的比较时该字符不被考虑。 方法 Compare(String, Int32, String, Int32, CompareOptions) 在执行区分区域性的比较时不考虑此类字符。 若要识别比较中的可忽略字符,请为 options 参数提供 或 OrdinalIgnoreCaseOrdinal

另请参阅

适用于

Compare(String, Int32, Int32, String, Int32, Int32)

将一个字符串的一部分与另一个字符串的一部分相比较。

public:
 virtual int Compare(System::String ^ string1, int offset1, int length1, System::String ^ string2, int offset2, int length2);
public:
 int Compare(System::String ^ string1, int offset1, int length1, System::String ^ string2, int offset2, int length2);
public virtual int Compare (string string1, int offset1, int length1, string string2, int offset2, int length2);
public int Compare (string? string1, int offset1, int length1, string? string2, int offset2, int length2);
public virtual int Compare (string? string1, int offset1, int length1, string? string2, int offset2, int length2);
abstract member Compare : string * int * int * string * int * int -> int
override this.Compare : string * int * int * string * int * int -> int
member this.Compare : string * int * int * string * int * int -> int
Public Overridable Function Compare (string1 As String, offset1 As Integer, length1 As Integer, string2 As String, offset2 As Integer, length2 As Integer) As Integer
Public Function Compare (string1 As String, offset1 As Integer, length1 As Integer, string2 As String, offset2 As Integer, length2 As Integer) As Integer

参数

string1
String

要比较的第一个字符串。

offset1
Int32

string1 中的字符从零开始的索引,将从此位置开始比较。

length1
Int32

string1 中要比较的连续字符数。

string2
String

要比较的第二个字符串。

offset2
Int32

string2 中的字符从零开始的索引,将从此位置开始比较。

length2
Int32

string2 中要比较的连续字符数。

返回

Int32

一个 32 位有符号整数,指示两个比较数之间的词法关系。

条件
这两个字符串相等。
小于零 string1 的指定部分小于 string2 的指定部分。
大于零 string1 的指定部分大于 string2 的指定部分。

例外

offset1length1offset2length2 小于零。

- 或 -

offset1 大于或等于 string1 中的字符数。

- 或 -

offset2 大于或等于 string2 中的字符数。

- 或 -

length1 大于从 offset1string1 末尾的字符数。

- 或 -

length2 大于从 offset2string2 末尾的字符数。

示例

以下示例使用不同的 CompareInfo 对象比较两个字符串的部分:

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Defines the strings to compare.
   String^ myStr1 = "calle";
   String^ myStr2 = "calor";
   
   // Uses GetCompareInfo to create the CompareInfo that uses the S"es-ES" culture with international sort.
   CompareInfo^ myCompIntl = CompareInfo::GetCompareInfo( "es-ES" );
   
   // Uses GetCompareInfo to create the CompareInfo that uses the S"es-ES" culture with traditional sort.
   CompareInfo^ myCompTrad = CompareInfo::GetCompareInfo( 0x040A );
   
   // Uses the CompareInfo property of the InvariantCulture.
   CompareInfo^ myCompInva = CultureInfo::InvariantCulture->CompareInfo;
   
   // Compares two strings using myCompIntl.
   Console::WriteLine( "Comparing \" {0}\" and \" {1}\"", myStr1->Substring( 2, 2 ), myStr2->Substring( 2, 2 ) );
   Console::WriteLine( "   With myCompIntl->Compare: {0}", myCompIntl->Compare( myStr1, 2, 2, myStr2, 2, 2 ) );
   Console::WriteLine( "   With myCompTrad->Compare: {0}", myCompTrad->Compare( myStr1, 2, 2, myStr2, 2, 2 ) );
   Console::WriteLine( "   With myCompInva->Compare: {0}", myCompInva->Compare( myStr1, 2, 2, myStr2, 2, 2 ) );
}

/*
This code produces the following output.

Comparing S"ll" and S"lo"
With myCompIntl.Compare: -1
With myCompTrad.Compare: 1
With myCompInva.Compare: -1

*/
using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Defines the strings to compare.
      String myStr1 = "calle";
      String myStr2 = "calor";

      // Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with international sort.
      CompareInfo myCompIntl = CompareInfo.GetCompareInfo( "es-ES" );

      // Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with traditional sort.
      CompareInfo myCompTrad = CompareInfo.GetCompareInfo( 0x040A );

      // Uses the CompareInfo property of the InvariantCulture.
      CompareInfo myCompInva = CultureInfo.InvariantCulture.CompareInfo;

      // Compares two strings using myCompIntl.
      Console.WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1.Substring( 2, 2 ), myStr2.Substring( 2, 2 ) );
      Console.WriteLine( "   With myCompIntl.Compare: {0}", myCompIntl.Compare( myStr1, 2, 2, myStr2, 2, 2 ) );
      Console.WriteLine( "   With myCompTrad.Compare: {0}", myCompTrad.Compare( myStr1, 2, 2, myStr2, 2, 2 ) );
      Console.WriteLine( "   With myCompInva.Compare: {0}", myCompInva.Compare( myStr1, 2, 2, myStr2, 2, 2 ) );
   }
}


/*
This code produces the following output.

Comparing "ll" and "lo"
   With myCompIntl.Compare: -1
   With myCompTrad.Compare: 1
   With myCompInva.Compare: -1

*/
Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Defines the strings to compare.
      Dim myStr1 As [String] = "calle"
      Dim myStr2 As [String] = "calor"

      ' Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with international sort.
      Dim myCompIntl As CompareInfo = CompareInfo.GetCompareInfo("es-ES")

      ' Uses GetCompareInfo to create the CompareInfo that uses the "es-ES" culture with traditional sort.
      Dim myCompTrad As CompareInfo = CompareInfo.GetCompareInfo(&H40A)

      ' Uses the CompareInfo property of the InvariantCulture.
      Dim myCompInva As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Compares two strings using myCompIntl.
      Console.WriteLine("Comparing ""{0}"" and ""{1}""", myStr1.Substring(2, 2), myStr2.Substring(2, 2))
      Console.WriteLine("   With myCompIntl.Compare: {0}", myCompIntl.Compare(myStr1, 2, 2, myStr2, 2, 2))
      Console.WriteLine("   With myCompTrad.Compare: {0}", myCompTrad.Compare(myStr1, 2, 2, myStr2, 2, 2))
      Console.WriteLine("   With myCompInva.Compare: {0}", myCompInva.Compare(myStr1, 2, 2, myStr2, 2, 2))

   End Sub

End Class


'This code produces the following output.
'
'Comparing "ll" and "lo"
'   With myCompIntl.Compare: -1
'   With myCompTrad.Compare: 1
'   With myCompInva.Compare: -1

注解

如果安全决策依赖于字符串比较或大小写更改,则应使用 InvariantCulture 属性来确保无论操作系统的区域性设置如何,行为都是一致的。

备注

如果可能,应使用具有 类型 CompareOptions 参数的字符串比较方法来指定预期的比较类型。 一般情况下,使用语言选项 (使用当前区域性) 来比较用户界面中显示的字符串,并指定 OrdinalOrdinalIgnoreCase 进行安全比较。

调用方说明

字符集包括可忽略字符。 方法 Compare(String, Int32, Int32, String, Int32, Int32) 在执行语言或区分区域性的比较时不考虑这些字符。 若要识别比较中的可忽略字符,请调用 Compare(String, Int32, Int32, String, Int32, Int32, CompareOptions) 方法并为 参数提供 或 OrdinalIgnoreCaseoptionsOrdinal

适用于

Compare(String, Int32, Int32, String, Int32, Int32, CompareOptions)

使用指定的 CompareOptions 值将一个字符串的一部分与另一个字符串的一部分相比较。

public:
 virtual int Compare(System::String ^ string1, int offset1, int length1, System::String ^ string2, int offset2, int length2, System::Globalization::CompareOptions options);
public:
 int Compare(System::String ^ string1, int offset1, int length1, System::String ^ string2, int offset2, int length2, System::Globalization::CompareOptions options);
public virtual int Compare (string string1, int offset1, int length1, string string2, int offset2, int length2, System.Globalization.CompareOptions options);
public int Compare (string? string1, int offset1, int length1, string? string2, int offset2, int length2, System.Globalization.CompareOptions options);
public virtual int Compare (string? string1, int offset1, int length1, string? string2, int offset2, int length2, System.Globalization.CompareOptions options);
abstract member Compare : string * int * int * string * int * int * System.Globalization.CompareOptions -> int
override this.Compare : string * int * int * string * int * int * System.Globalization.CompareOptions -> int
member this.Compare : string * int * int * string * int * int * System.Globalization.CompareOptions -> int
Public Overridable Function Compare (string1 As String, offset1 As Integer, length1 As Integer, string2 As String, offset2 As Integer, length2 As Integer, options As CompareOptions) As Integer
Public Function Compare (string1 As String, offset1 As Integer, length1 As Integer, string2 As String, offset2 As Integer, length2 As Integer, options As CompareOptions) As Integer

参数

string1
String

要比较的第一个字符串。

offset1
Int32

string1 中的字符从零开始的索引,将从此位置开始比较。

length1
Int32

string1 中要比较的连续字符数。

string2
String

要比较的第二个字符串。

offset2
Int32

string2 中的字符从零开始的索引,将从此位置开始比较。

length2
Int32

string2 中要比较的连续字符数。

options
CompareOptions

一个值,用于定义应如何比较 string1string2options 可以为枚举值 Ordinal,或为以下一个或多个值的按位组合:IgnoreCaseIgnoreSymbolsIgnoreNonSpaceIgnoreWidthIgnoreKanaTypeStringSort

返回

Int32

一个 32 位有符号整数,指示两个比较数之间的词法关系。

条件
这两个字符串相等。
小于零 string1 的指定部分小于 string2 的指定部分。
大于零 string1 的指定部分大于 string2 的指定部分。

例外

offset1length1offset2length2 小于零。

- 或 -

offset1 大于或等于 string1 中的字符数。

- 或 -

offset2 大于或等于 string2 中的字符数。

- 或 -

length1 大于从 offset1string1 末尾的字符数。

- 或 -

length2 大于从 offset2string2 末尾的字符数。

options 包含无效的 CompareOptions 值。

示例

以下示例使用不同的 CompareOptions 设置比较两个字符串的部分。

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Defines the strings to compare.
   String^ myStr1 = "My Uncle Bill's clients";
   String^ myStr2 = "My uncle bills clients";
   
   // Creates a CompareInfo that uses the InvariantCulture.
   CompareInfo^ myComp = CultureInfo::InvariantCulture->CompareInfo;
   
   // Compares two strings using myComp.
   Console::WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1->Substring( 3, 10 ), myStr2->Substring( 3, 10 ) );
   Console::WriteLine( "   With no CompareOptions            : {0}", myComp->Compare( myStr1, 3, 10, myStr2, 3, 10 ) );
   Console::WriteLine( "   With None                         : {0}", myComp->Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions::None ) );
   Console::WriteLine( "   With Ordinal                      : {0}", myComp->Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions::Ordinal ) );
   Console::WriteLine( "   With StringSort                   : {0}", myComp->Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions::StringSort ) );
   Console::WriteLine( "   With IgnoreCase                   : {0}", myComp->Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions::IgnoreCase ) );
   Console::WriteLine( "   With IgnoreSymbols                : {0}", myComp->Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions::IgnoreSymbols ) );
   Console::WriteLine( "   With IgnoreCase and IgnoreSymbols : {0}", myComp->Compare( myStr1, 3, 10, myStr2, 3, 10, static_cast<CompareOptions>(CompareOptions::IgnoreCase | CompareOptions::IgnoreSymbols) ) );
}

/*
This code produces the following output.

Comparing "Uncle Bill" and "uncle bill"
   With no CompareOptions            : 1
   With None                         : 1
   With Ordinal                      : -32
   With StringSort                   : 1
   With IgnoreCase                   : 0
   With IgnoreSymbols                : 1
   With IgnoreCase and IgnoreSymbols : 0

*/
using System;
using System.Globalization;

public class SamplesCompareInfo  {

   public static void Main()  {

      // Defines the strings to compare.
      String myStr1 = "My Uncle Bill's clients";
      String myStr2 = "My uncle bills clients";

      // Creates a CompareInfo that uses the InvariantCulture.
      CompareInfo myComp = CultureInfo.InvariantCulture.CompareInfo;

      // Compares two strings using myComp.
      Console.WriteLine( "Comparing \"{0}\" and \"{1}\"", myStr1.Substring( 3, 10 ), myStr2.Substring( 3, 10 ) );
      Console.WriteLine( "   With no CompareOptions            : {0}", myComp.Compare( myStr1, 3, 10, myStr2, 3, 10 ) );
      Console.WriteLine( "   With None                         : {0}", myComp.Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions.None ) );
      Console.WriteLine( "   With Ordinal                      : {0}", myComp.Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions.Ordinal ) );
      Console.WriteLine( "   With StringSort                   : {0}", myComp.Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions.StringSort ) );
      Console.WriteLine( "   With IgnoreCase                   : {0}", myComp.Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions.IgnoreCase ) );
      Console.WriteLine( "   With IgnoreSymbols                : {0}", myComp.Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions.IgnoreSymbols ) );
      Console.WriteLine( "   With IgnoreCase and IgnoreSymbols : {0}", myComp.Compare( myStr1, 3, 10, myStr2, 3, 10, CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols ) );
   }
}


/*
This code produces the following output.

Comparing "Uncle Bill" and "uncle bill"
   With no CompareOptions            : 1
   With None                         : 1
   With Ordinal                      : -32
   With StringSort                   : 1
   With IgnoreCase                   : 0
   With IgnoreSymbols                : 1
   With IgnoreCase and IgnoreSymbols : 0

*/
Imports System.Globalization

Public Class SamplesCompareInfo

   Public Shared Sub Main()

      ' Defines the strings to compare.
      Dim myStr1 As [String] = "My Uncle Bill's clients"
      Dim myStr2 As [String] = "My uncle bills clients"

      ' Creates a CompareInfo that uses the InvariantCulture.
      Dim myComp As CompareInfo = CultureInfo.InvariantCulture.CompareInfo

      ' Compares two strings using myComp.
      Console.WriteLine("Comparing ""{0}"" and ""{1}""", myStr1.Substring(3, 10), myStr2.Substring(3, 10))
      Console.WriteLine("   With no CompareOptions            : {0}", myComp.Compare(myStr1, 3, 10, myStr2, 3, 10))
      Console.WriteLine("   With None                         : {0}", myComp.Compare(myStr1, 3, 10, myStr2, 3, 10, CompareOptions.None))
      Console.WriteLine("   With Ordinal                      : {0}", myComp.Compare(myStr1, 3, 10, myStr2, 3, 10, CompareOptions.Ordinal))
      Console.WriteLine("   With StringSort                   : {0}", myComp.Compare(myStr1, 3, 10, myStr2, 3, 10, CompareOptions.StringSort))
      Console.WriteLine("   With IgnoreCase                   : {0}", myComp.Compare(myStr1, 3, 10, myStr2, 3, 10, CompareOptions.IgnoreCase))
      Console.WriteLine("   With IgnoreSymbols                : {0}", myComp.Compare(myStr1, 3, 10, myStr2, 3, 10, CompareOptions.IgnoreSymbols))
      Console.WriteLine("   With IgnoreCase and IgnoreSymbols : {0}", myComp.Compare(myStr1, 3, 10, myStr2, 3, 10, CompareOptions.IgnoreCase Or CompareOptions.IgnoreSymbols))

   End Sub

End Class


'This code produces the following output.
'
'Comparing "Uncle Bill" and "uncle bill"
'   With no CompareOptions            : 1
'   With None                         : 1
'   With Ordinal                      : -32
'   With StringSort                   : 1
'   With IgnoreCase                   : 0
'   With IgnoreSymbols                : 1
'   With IgnoreCase and IgnoreSymbols : 0

注解

如果安全决策依赖于字符串比较或大小写更改,则应使用 InvariantCulture 属性来确保无论操作系统的区域性设置如何,行为都是一致的。

备注

如果可能,应调用具有 类型 CompareOptions 参数的字符串比较方法,以指定预期的比较类型。 一般情况下,使用语言选项 (使用当前区域性) 来比较用户界面中显示的字符串,并指定 OrdinalOrdinalIgnoreCase 进行安全比较。

调用方说明

字符集包括可忽略字符。 方法 Compare(String, Int32, Int32, String, Int32, Int32, CompareOptions) 在执行区分区域性的比较时不考虑这些字符。 若要识别比较中的可忽略字符,请为 options 参数提供 或 OrdinalIgnoreCaseOrdinal

另请参阅

适用于