IDictionary.Remove(Object) IDictionary.Remove(Object) IDictionary.Remove(Object) IDictionary.Remove(Object) Method

Definizione

Rimuove dall'oggetto IDictionary l'elemento con la chiave specificata.Removes the element with the specified key from the IDictionary object.

public:
 void Remove(System::Object ^ key);
public void Remove (object key);
abstract member Remove : obj -> unit
Public Sub Remove (key As Object)

Parametri

key
Object Object Object Object

Chiave dell'elemento da rimuovere.The key of the element to remove.

Eccezioni

L'oggetto IDictionary è in sola lettura.The IDictionary object is read-only.

-oppure--or- Le dimensioni dell'oggetto IDictionary sono fisse.The IDictionary has a fixed size.

Esempi

Nell'esempio di codice riportato di seguito viene illustrato Remove come implementare il metodo.The following code example demonstrates how to implement the Remove method. Questo esempio di codice fa parte di un esempio più ampio fornito IDictionary per la classe.This code example is part of a larger example provided for the IDictionary class.

public:
    virtual void Remove(Object^ key)
    {
        if (key == nullptr)
        {
            throw gcnew ArgumentNullException("key");
        }
        // Try to find the key in the DictionaryEntry array
        int index;
        if (TryGetIndexOfKey(key, &index))
        {
            // If the key is found, slide all the items down.
            Array::Copy(items, index + 1, items, index, itemsInUse -
                index - 1);
            itemsInUse--;
        }
        else
        {
            // If the key is not in the dictionary, just return.
            return;
        }
    }
public void Remove(object key)
{
    if (key == null) throw new ArgumentNullException("key");
    // Try to find the key in the DictionaryEntry array
    Int32 index;
    if (TryGetIndexOfKey(key, out index))
    {
        // If the key is found, slide all the items up.
        Array.Copy(items, index + 1, items, index, ItemsInUse - index - 1);
        ItemsInUse--;
    } 
    else
    {
        // If the key is not in the dictionary, just return. 
    }
}
Public Sub Remove(ByVal key As Object) Implements IDictionary.Remove
    If key = Nothing Then
        Throw New ArgumentNullException("key")
    End If
    ' Try to find the key in the DictionaryEntry array
    Dim index As Integer
    If TryGetIndexOfKey(key, index) Then

        ' If the key is found, slide all the items up.
        Array.Copy(items, index + 1, items, index, (ItemsInUse - index) - 1)
        ItemsInUse = ItemsInUse - 1
    Else

        ' If the key is not in the dictionary, just return. 
    End If
End Sub

Commenti

Se l'oggetto IDictionary non contiene alcun elemento con la chiave specificata, IDictionary rimarrà invariato.If the IDictionary object does not contain an element with the specified key, the IDictionary remains unchanged. Non viene generata alcuna eccezione.No exception is thrown.

Si applica a