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ISelectionItemProvider.RemoveFromSelection Yöntem

Tanım

Seçili öğeler koleksiyonundan geçerli öğeyi kaldırır.

public:
 void RemoveFromSelection();
public void RemoveFromSelection ();
abstract member RemoveFromSelection : unit -> unit
Public Sub RemoveFromSelection ()

Örnekler

Aşağıdaki örnek kod, öğeyi seçili öğeler koleksiyonundan kaldırır.

/// <summary>
/// Removes the item from the selection in list boxes that support 
/// multiple selection or no selection at all.
/// </summary>
/// <remarks>
/// selectedItems is the collection of selected ListItems.
/// </remarks>
public void RemoveFromSelection()
{
    // Return if the item is already selected.
    if (((ISelectionItemProvider)this).IsSelected)
        return;
    if (((ISelectionProvider)this).IsSelectionRequired & selectedItems.Count <= 0)
        throw new InvalidOperationException("Operation cannot be performed.");

    selectedItems.Remove(this);
    // TODO: Update UI.
}
''' <summary>
''' Removes the item from the selection in list boxes that support 
''' multiple selection or no selection at all.
''' </summary>
''' <remarks>
''' selectedItems is the collection of selected ListItems.
''' </remarks>
Public Sub RemoveFromSelection() Implements ISelectionItemProvider.RemoveFromSelection
    ' Return if the item is already selected.
    If (CType(Me, ISelectionItemProvider)).IsSelected Then
        Return
    End If
    If (CType(Me, ISelectionProvider)).IsSelectionRequired And selectedItems.Count <= 0 Then
        Throw New InvalidOperationException("Operation cannot be performed.")
    End If

    selectedItems.Remove(Me)
    ' TODO: Update UI.
End Sub
/// <summary>
/// Specifies whether the item is selected.
/// </summary>
/// <remarks>
/// selectedItems is the collection of selected ListItems.
/// </remarks>
public bool IsSelected
{
    get
    {
        return selectedItems.Contains(this);
    }
}
''' <summary>
''' Specifies whether the item is selected.
''' </summary>
''' <remarks>
''' selectedItems is the collection of selected ListItems.
''' </remarks>
Public ReadOnly Property IsSelected() As Boolean Implements ISelectionItemProvider.IsSelected
    Get
        Return selectedItems.Contains(Me)
    End Get
End Property

Açıklamalar

Uygun şekilde bir ElementRemovedFromSelectionEvent gönderin.

Not

Bu kural, kapsayıcının tek veya birden çok seçime izin verip vermediğine veya seçimi değiştirmek için hangi yöntemin kullanıldığına bağlı değildir. Sadece sonuç önemlidir.

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