NameObjectCollectionBase.BaseGetAllValues Metodo

Definizione

Spazio dei nomi:

System.Collections.Specialized

Assembly:

System.Collections.Specialized.dll

Restituisce una matrice che contiene tutti i valori inclusi nell'istanza di NameObjectCollectionBase.

Overload

BaseGetAllValues()	Restituisce una matrice Object che contiene tutti i valori inclusi nell'istanza di NameObjectCollectionBase.
BaseGetAllValues(Type)	Restituisce una matrice del tipo specificato che contiene tutti i valori inclusi nell'istanza di NameObjectCollectionBase.

BaseGetAllValues()

Origine:

NameObjectCollectionBase.cs

Restituisce una matrice Object che contiene tutti i valori inclusi nell'istanza di NameObjectCollectionBase.

protected:
 cli::array <System::Object ^> ^ BaseGetAllValues();

protected object?[] BaseGetAllValues ();

member this.BaseGetAllValues : unit -> obj[]

Protected Function BaseGetAllValues () As Object()

Restituisce

Object[]

Matrice Object che contiene tutti i valori inclusi nell'istanza di NameObjectCollectionBase.

Esempio

Nell'esempio di codice seguente viene BaseGetAllKeys usato e BaseGetAllValues per ottenere una matrice di chiavi o una matrice dei valori.

#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;

public ref class MyCollection : public NameObjectCollectionBase  {

private:
   DictionaryEntry^ _de;

   // Gets a key-and-value pair (DictionaryEntry) using an index.
public:
   property DictionaryEntry^ default[ int ]  {
      DictionaryEntry^ get(int index)  {
         _de->Key = this->BaseGetKey( index );
         _de->Value = this->BaseGet( index );
         return( _de );
      }
   }

   // Adds elements from an IDictionary into the new collection.
   MyCollection( IDictionary^ d )  {

      _de = gcnew DictionaryEntry();

      for each ( DictionaryEntry^ de in d )  {
         this->BaseAdd( (String^) de->Key, de->Value );
      }
   }

   // Gets a String array that contains all the keys in the collection.
   property array<String^>^ AllKeys {
      array<String^>^ get()  {
         return( this->BaseGetAllKeys() );
      }
   }

   // Gets an Object array that contains all the values in the collection.
   property Array^ AllValues  {
      Array^ get()  {
         return( this->BaseGetAllValues() );
      }
   }

   // Gets a String array that contains all the values in the collection.
   property array<String^>^ AllStringValues  {
      array<String^>^ get()  {
         return( (array<String^>^) this->BaseGetAllValues( System::String::typeid ) );
      }
   }
};

public ref class SamplesNameObjectCollectionBase  {

public:
   static void Main()  {

      // Creates and initializes a new MyCollection instance.
      IDictionary^ d = gcnew ListDictionary();
      d->Add( "red", "apple" );
      d->Add( "yellow", "banana" );
      d->Add( "green", "pear" );
      MyCollection^ myCol = gcnew MyCollection( d );
      Console::WriteLine( "Initial state of the collection (Count = {0}):", myCol->Count );
      PrintKeysAndValues( myCol );

      // Displays the list of keys.
      Console::WriteLine( "The list of keys:" );
      for each ( String^ s in myCol->AllKeys )  {
         Console::WriteLine( "   {0}", s );
      }

      // Displays the list of values of type Object.
      Console::WriteLine( "The list of values (Object):" );
      for each ( Object^ o in myCol->AllValues )  {
         Console::WriteLine( "   {0}", o->ToString() );
      }

      // Displays the list of values of type String.
      Console::WriteLine( "The list of values (String):" );
      for each ( String^ s in myCol->AllValues )  {
         Console::WriteLine( "   {0}", s );
      }
   }

public:
   static void PrintKeysAndValues( MyCollection^ myCol )  {
      for ( int i = 0; i < myCol->Count; i++ )  {
         Console::WriteLine( "[{0}] : {1}, {2}", i, myCol[i]->Key, myCol[i]->Value );
      }
   }
};

int main()
{
    SamplesNameObjectCollectionBase::Main();
}

/*
This code produces the following output.

Initial state of the collection (Count = 3):
[0] : red, apple
[1] : yellow, banana
[2] : green, pear
The list of keys:
   red
   yellow
   green
The list of values (Object):
   apple
   banana
   pear
The list of values (String):
   apple
   banana
   pear

*/

using System;
using System.Collections;
using System.Collections.Specialized;

public class MyCollection : NameObjectCollectionBase  {

   private DictionaryEntry _de = new DictionaryEntry();

   // Gets a key-and-value pair (DictionaryEntry) using an index.
   public DictionaryEntry this[ int index ]  {
      get  {
         _de.Key = this.BaseGetKey( index );
         _de.Value = this.BaseGet( index );
         return( _de );
      }
   }

   // Adds elements from an IDictionary into the new collection.
   public MyCollection( IDictionary d )  {
      foreach ( DictionaryEntry de in d )  {
         this.BaseAdd( (String) de.Key, de.Value );
      }
   }

   // Gets a String array that contains all the keys in the collection.
   public String[] AllKeys  {
      get  {
         return( this.BaseGetAllKeys() );
      }
   }

   // Gets an Object array that contains all the values in the collection.
   public Array AllValues  {
      get  {
         return( this.BaseGetAllValues() );
      }
   }

   // Gets a String array that contains all the values in the collection.
   public String[] AllStringValues  {
      get  {
         return( (String[]) this.BaseGetAllValues( typeof(System.String) ) );
      }
   }
}

public class SamplesNameObjectCollectionBase  {

   public static void Main()  {

      // Creates and initializes a new MyCollection instance.
      IDictionary d = new ListDictionary();
      d.Add( "red", "apple" );
      d.Add( "yellow", "banana" );
      d.Add( "green", "pear" );
      MyCollection myCol = new MyCollection( d );
      Console.WriteLine( "Initial state of the collection (Count = {0}):", myCol.Count );
      PrintKeysAndValues( myCol );

      // Displays the list of keys.
      Console.WriteLine( "The list of keys:" );
      foreach ( String s in myCol.AllKeys )  {
         Console.WriteLine( "   {0}", s );
      }

      // Displays the list of values of type Object.
      Console.WriteLine( "The list of values (Object):" );
      foreach ( Object o in myCol.AllValues )  {
         Console.WriteLine( "   {0}", o.ToString() );
      }

      // Displays the list of values of type String.
      Console.WriteLine( "The list of values (String):" );
      foreach ( String s in myCol.AllValues )  {
         Console.WriteLine( "   {0}", s );
      }
   }

   public static void PrintKeysAndValues( MyCollection myCol )  {
      for ( int i = 0; i < myCol.Count; i++ )  {
         Console.WriteLine( "[{0}] : {1}, {2}", i, myCol[i].Key, myCol[i].Value );
      }
   }
}


/*
This code produces the following output.

Initial state of the collection (Count = 3):
[0] : red, apple
[1] : yellow, banana
[2] : green, pear
The list of keys:
   red
   yellow
   green
The list of values (Object):
   apple
   banana
   pear
The list of values (String):
   apple
   banana
   pear

*/

Imports System.Collections
Imports System.Collections.Specialized

Public Class MyCollection
   Inherits NameObjectCollectionBase

   Private _de As New DictionaryEntry()

   ' Gets a key-and-value pair (DictionaryEntry) using an index.
   Default Public ReadOnly Property Item(index As Integer) As DictionaryEntry
      Get
         _de.Key = Me.BaseGetKey(index)
         _de.Value = Me.BaseGet(index)
         Return _de
      End Get
   End Property

   ' Adds elements from an IDictionary into the new collection.
   Public Sub New(d As IDictionary)
      Dim de As DictionaryEntry
      For Each de In  d
         Me.BaseAdd(CType(de.Key, String), de.Value)
      Next de
   End Sub

   ' Gets a String array that contains all the keys in the collection.
   Public ReadOnly Property AllKeys() As String()
      Get
         Return Me.BaseGetAllKeys()
      End Get
   End Property

   ' Gets an Object array that contains all the values in the collection.
   Public ReadOnly Property AllValues() As Array
      Get
         Return Me.BaseGetAllValues()
      End Get
   End Property

   ' Gets a String array that contains all the values in the collection.
   Public ReadOnly Property AllStringValues() As String()
      Get
         Return CType(Me.BaseGetAllValues(GetType(String)), String())
      End Get
   End Property

End Class


Public Class SamplesNameObjectCollectionBase   

   Public Shared Sub Main()

      ' Creates and initializes a new MyCollection instance.
      Dim d As New ListDictionary()
      d.Add("red", "apple")
      d.Add("yellow", "banana")
      d.Add("green", "pear")
      Dim myCol As New MyCollection(d)
      Console.WriteLine("Initial state of the collection (Count = {0}):", myCol.Count)
      PrintKeysAndValues(myCol)

      ' Displays the list of keys.
      Console.WriteLine("The list of keys:")
      Dim s As String
      For Each s In  myCol.AllKeys
         Console.WriteLine("   {0}", s)
      Next s

      ' Displays the list of values of type Object.
      Console.WriteLine("The list of values (Object):")
      Dim o As Object
      For Each o In  myCol.AllValues
         Console.WriteLine("   {0}", o.ToString())
      Next o

      ' Displays the list of values of type String.
      Console.WriteLine("The list of values (String):")
      For Each s In  myCol.AllValues
         Console.WriteLine("   {0}", s)
      Next s

   End Sub

   Public Shared Sub PrintKeysAndValues(myCol As MyCollection)
      Dim i As Integer
      For i = 0 To myCol.Count - 1
         Console.WriteLine("[{0}] : {1}, {2}", i, myCol(i).Key, myCol(i).Value)
      Next i
   End Sub

End Class


'This code produces the following output.
'
'Initial state of the collection (Count = 3):
'[0] : red, apple
'[1] : yellow, banana
'[2] : green, pear
'The list of keys:
'   red
'   yellow
'   green
'The list of values (Object):
'   apple
'   banana
'   pear
'The list of values (String):
'   apple
'   banana
'   pear

Commenti

Questo metodo è un'operazione O(n), dove n è Count.

BaseGetAllValues(Type)

Origine:

NameObjectCollectionBase.cs

Restituisce una matrice del tipo specificato che contiene tutti i valori inclusi nell'istanza di NameObjectCollectionBase.

protected:
 cli::array <System::Object ^> ^ BaseGetAllValues(Type ^ type);

protected object?[] BaseGetAllValues (Type type);

member this.BaseGetAllValues : Type -> obj[]

Protected Function BaseGetAllValues (type As Type) As Object()

Parametri

type

Type

Oggetto Type che rappresenta il tipo di matrice che deve essere restituito.

Restituisce

Object[]

Matrice del tipo specificato che contiene tutti i valori inclusi nell'istanza di NameObjectCollectionBase.

Eccezioni

ArgumentNullException

type è null.

ArgumentException

type non è un oggetto Type valido.

Commenti

Questo metodo è un'operazione O(n), dove n è Count.

Vedi anche

• Type