Dictionary<TKey,TValue>.IDictionary.Values Propriété

Définition

Espace de noms:

System.Collections.Generic

Assembly:

System.Collections.dll

Source:

Dictionary.cs

Obtient ICollection contenant les valeurs de IDictionary.

property System::Collections::ICollection ^ System::Collections::IDictionary::Values { System::Collections::ICollection ^ get(); };

System.Collections.ICollection System.Collections.IDictionary.Values { get; }

member this.System.Collections.IDictionary.Values : System.Collections.ICollection

 ReadOnly Property Values As ICollection Implements IDictionary.Values

Valeur de propriété

ICollection

ICollection contenant les valeurs de IDictionary.

Implémente

Values

Exemples

L’exemple de code suivant montre comment utiliser la IDictionary.Values propriété de l’interface System.Collections.IDictionary avec un Dictionary<TKey,TValue>, pour répertorier les valeurs dans le dictionnaire. L’exemple montre également comment énumérer les paires clé/valeur dans le dictionnaire ; notez que l’énumérateur de l’interface System.Collections.IDictionary retourne DictionaryEntry des objets plutôt que des KeyValuePair<TKey,TValue> objets.

L’exemple de code fait partie d’un exemple plus grand, y compris la sortie, fourni pour la IDictionary.Add méthode .

using System;
using System.Collections;
using System.Collections.Generic;

public class Example
{
    public static void Main()
    {
        // Create a new dictionary of strings, with string keys,
        // and access it using the IDictionary interface.
        //
        IDictionary openWith = new Dictionary<string, string>();

        // Add some elements to the dictionary. There are no
        // duplicate keys, but some of the values are duplicates.
        // IDictionary.Add throws an exception if incorrect types
        // are supplied for key or value.
        openWith.Add("txt", "notepad.exe");
        openWith.Add("bmp", "paint.exe");
        openWith.Add("dib", "paint.exe");
        openWith.Add("rtf", "wordpad.exe");

Imports System.Collections
Imports System.Collections.Generic

Public Class Example
    
    Public Shared Sub Main() 

        ' Create a new dictionary of strings, with string keys,
        ' and access it using the IDictionary interface.
        '
        Dim openWith As IDictionary = _
            New Dictionary(Of String, String)
        
        ' Add some elements to the dictionary. There are no 
        ' duplicate keys, but some of the values are duplicates.
        ' IDictionary.Add throws an exception if incorrect types
        ' are supplied for key or value.
        openWith.Add("txt", "notepad.exe")
        openWith.Add("bmp", "paint.exe")
        openWith.Add("dib", "paint.exe")
        openWith.Add("rtf", "wordpad.exe")

// To get the values alone, use the Values property.
ICollection icoll = openWith.Values;

// The elements of the collection are strongly typed
// with the type that was specified for dictionary values,
// even though the ICollection interface is not strongly
// typed.
Console.WriteLine();
foreach( string s in icoll )
{
    Console.WriteLine("Value = {0}", s);
}

' To get the values alone, use the Values property.
Dim icoll As ICollection = openWith.Values

' The elements of the collection are strongly typed
' with the type that was specified for dictionary values,
' even though the ICollection interface is not strongly
' typed.
Console.WriteLine()
For Each s As String In  icoll
    Console.WriteLine("Value = {0}", s)
Next s

// When you use foreach to enumerate dictionary elements
// with the IDictionary interface, the elements are retrieved
// as DictionaryEntry objects instead of KeyValuePair objects.
Console.WriteLine();
foreach( DictionaryEntry de in openWith )
{
    Console.WriteLine("Key = {0}, Value = {1}",
        de.Key, de.Value);
}

' When you use foreach to enumerate dictionary elements
' with the IDictionary interface, the elements are retrieved
' as DictionaryEntry objects instead of KeyValuePair objects.
Console.WriteLine()
For Each de As DictionaryEntry In openWith
    Console.WriteLine("Key = {0}, Value = {1}", _
        de.Key, de.Value)
Next

    }
}

    End Sub

End Class

Remarques

L’ordre des valeurs dans le retourné ICollection n’est pas spécifié, mais il est garanti qu’il s’agit du même ordre que les clés correspondantes dans le ICollection retourné par la Keys propriété.

L’obtention de la valeur de cette propriété est une opération O(1).

Voir aussi

• ICollection