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CommandManager.RemovePreviewExecutedHandler Metode

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Definisi

Ruang nama:
System.Windows.Input
Rakitan:
PresentationCore.dll

Mencopot yang ditentukan ExecutedRoutedEventHandler dari elemen yang ditentukan.

public:
 static void RemovePreviewExecutedHandler(System::Windows::UIElement ^ element, System::Windows::Input::ExecutedRoutedEventHandler ^ handler);
public static void RemovePreviewExecutedHandler (System.Windows.UIElement element, System.Windows.Input.ExecutedRoutedEventHandler handler);
static member RemovePreviewExecutedHandler : System.Windows.UIElement * System.Windows.Input.ExecutedRoutedEventHandler -> unit
Public Shared Sub RemovePreviewExecutedHandler (element As UIElement, handler As ExecutedRoutedEventHandler)

Parameter

element
UIElement

Elemen yang akan dihapus handler .

handler
ExecutedRoutedEventHandler

Handler yang dijalankan.

Pengecualian

ArgumentNullException

element atau handler adalah null.

Contoh

Contoh berikut melepaskan CanExecuteRoutedEventHandler dan ExecutedRoutedEventHandler yang sebelumnya telah dilampirkan ke Button.

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

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

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