OrderedDictionary.Keys Propriété

public:
 property System::Collections::ICollection ^ Keys { System::Collections::ICollection ^ get(); };

public System.Collections.ICollection Keys { get; }

member this.Keys : System.Collections.ICollection

Public ReadOnly Property Keys As ICollection

Valeur de propriété

Objet ICollection contenant les clés de la collection OrderedDictionary.

Implémente

Exemples

L’exemple de code suivant illustre la création et le remplissage d’une OrderedDictionary collection, puis imprime le contenu dans la console. Dans cet exemple, les Keys propriétés et Values sont passées à une méthode qui affiche le contenu. Ce code fait partie d’un exemple de code plus large qui peut être consulté à l’adresse OrderedDictionary.

// Creates and initializes a OrderedDictionary.
OrderedDictionary^ myOrderedDictionary = gcnew OrderedDictionary();
myOrderedDictionary->Add("testKey1", "testValue1");
myOrderedDictionary->Add("testKey2", "testValue2");
myOrderedDictionary->Add("keyToDelete", "valueToDelete");
myOrderedDictionary->Add("testKey3", "testValue3");

ICollection^ keyCollection = myOrderedDictionary->Keys;
ICollection^ valueCollection = myOrderedDictionary->Values;

// Display the contents using the key and value collections
DisplayContents(keyCollection, valueCollection, myOrderedDictionary->Count);

// Creates and initializes a OrderedDictionary.
OrderedDictionary myOrderedDictionary = new OrderedDictionary();
myOrderedDictionary.Add("testKey1", "testValue1");
myOrderedDictionary.Add("testKey2", "testValue2");
myOrderedDictionary.Add("keyToDelete", "valueToDelete");
myOrderedDictionary.Add("testKey3", "testValue3");

ICollection keyCollection = myOrderedDictionary.Keys;
ICollection valueCollection = myOrderedDictionary.Values;

// Display the contents using the key and value collections
DisplayContents(keyCollection, valueCollection, myOrderedDictionary.Count);

' Creates and initializes a OrderedDictionary.
Dim myOrderedDictionary As New OrderedDictionary()
myOrderedDictionary.Add("testKey1", "testValue1")
myOrderedDictionary.Add("testKey2", "testValue2")
myOrderedDictionary.Add("keyToDelete", "valueToDelete")
myOrderedDictionary.Add("testKey3", "testValue3")

Dim keyCollection As ICollection = myOrderedDictionary.Keys
Dim valueCollection As ICollection = myOrderedDictionary.Values

' Display the contents Imports the key and value collections
DisplayContents( _
    keyCollection, valueCollection, myOrderedDictionary.Count)

// Displays the contents of the OrderedDictionary from its keys and values
static void DisplayContents(
    ICollection^ keyCollection, ICollection^ valueCollection, int dictionarySize)
{
    array<String^>^ myKeys = gcnew array<String^>(dictionarySize);
    array<String^>^ myValues = gcnew array<String^>(dictionarySize);
    keyCollection->CopyTo(myKeys, 0);
    valueCollection->CopyTo(myValues, 0);

    // Displays the contents of the OrderedDictionary
    Console::WriteLine("   INDEX KEY                       VALUE");
    for (int i = 0; i < dictionarySize; i++)
    {
        Console::WriteLine("   {0,-5} {1,-25} {2}",
            i, myKeys[i], myValues[i]);
    }
    Console::WriteLine();
}

// Displays the contents of the OrderedDictionary from its keys and values
public static void DisplayContents(
    ICollection keyCollection, ICollection valueCollection, int dictionarySize)
{
    String[] myKeys = new String[dictionarySize];
    String[] myValues = new String[dictionarySize];
    keyCollection.CopyTo(myKeys, 0);
    valueCollection.CopyTo(myValues, 0);

    // Displays the contents of the OrderedDictionary
    Console.WriteLine("   INDEX KEY                       VALUE");
    for (int i = 0; i < dictionarySize; i++)
    {
        Console.WriteLine("   {0,-5} {1,-25} {2}",
            i, myKeys[i], myValues[i]);
    }
    Console.WriteLine();
}

' Displays the contents of the OrderedDictionary from its keys and values
Public Shared Sub DisplayContents( _
    ByVal keyCollection As ICollection, _
    ByVal valueCollection As ICollection, ByVal dictionarySize As Integer)

    Dim myKeys(dictionarySize) As [String]
    Dim myValues(dictionarySize) As [String]
    keyCollection.CopyTo(myKeys, 0)
    valueCollection.CopyTo(myValues, 0)

    ' Displays the contents of the OrderedDictionary
    Console.WriteLine("   INDEX KEY                       VALUE")
    Dim i As Integer
    For i = 0 To dictionarySize - 1
        Console.WriteLine("   {0,-5} {1,-25} {2}", _
             i, myKeys(i), myValues(i))
    Next i
    Console.WriteLine()
End Sub

Remarques

L’objet retourné ICollection n’est pas une copie statique ; au lieu de cela, le ICollection fait référence aux clés de la collection d’origine OrderedDictionary . Par conséquent, les OrderedDictionary modifications apportées au continuent d’être répercutées dans le ICollection.

S’applique à