ISelectionItemProvider.RemoveFromSelection Méthode

Définition

Espace de noms:

System.Windows.Automation.Provider

Assembly:

UIAutomationProvider.dll

Supprime l’élément actuel de la collection d’éléments sélectionnés.

public:
 void RemoveFromSelection();

public void RemoveFromSelection ();

abstract member RemoveFromSelection : unit -> unit

Public Sub RemoveFromSelection ()

Exemples

L’exemple de code suivant supprime l’élément d’une collection d’éléments sélectionnés.

/// <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

Remarques

Envoyez un ElementRemovedFromSelectionEvent comme il convient.

Notes

Cette règle ne dépend pas du fait que le conteneur autorise les sélections uniques ou multiples, ni de la méthode utilisée pour modifier la sélection. Seul le résultat compte.

Voir aussi

• Implémentation du modèle de contrôle SelectionItem d’UI Automation
• Exemple de fournisseur de fragments