CommandManager.RemovePreviewCanExecuteHandler Method

Reference

Definition

Namespace:: System.Windows.Input

Assembly:: PresentationCore.dll

Important

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Detaches the specified CanExecuteRoutedEventHandler from the specified element.

public:
 static void RemovePreviewCanExecuteHandler(System::Windows::UIElement ^ element, System::Windows::Input::CanExecuteRoutedEventHandler ^ handler);

public static void RemovePreviewCanExecuteHandler (System.Windows.UIElement element, System.Windows.Input.CanExecuteRoutedEventHandler handler);

static member RemovePreviewCanExecuteHandler : System.Windows.UIElement * System.Windows.Input.CanExecuteRoutedEventHandler -> unit

Public Shared Sub RemovePreviewCanExecuteHandler (element As UIElement, handler As CanExecuteRoutedEventHandler)

Parameters

element: UIElement

The element to remove handler from.

handler: CanExecuteRoutedEventHandler

The can execute handler.

Exceptions

ArgumentNullException

element or handler is null.

Examples

The following example detaches a CanExecuteRoutedEventHandler and an ExecutedRoutedEventHandler which had previously been attached to a Button.

CommandManager.RemoveExecutedHandler(helpButton, HelpCmdExecuted);
CommandManager.RemoveCanExecuteHandler(helpButton, HelpCmdCanExecute);

CommandManager.RemoveExecutedHandler(helpButton, AddressOf HelpCmdExecuted)
CommandManager.RemoveCanExecuteHandler(helpButton, AddressOf HelpCmdCanExecute)

Applies to

Megosztás a következőn keresztül: