CommandManager.RemovePreviewExecutedHandler 方法

定義

命名空間:
System.Windows.Input
組件:
PresentationCore.dll

將指定的 ExecutedRoutedEventHandler 元素與指定的元素分離。

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)

參數

element
UIElement

要移除 handler 的元素。

handler
ExecutedRoutedEventHandler

被處決的操控者。

例外狀況

ArgumentNullException

element 或 handler 為 null。

範例

以下範例將先前連接於 a CanExecuteRoutedEventHandler的 a ExecutedRoutedEventHandler 與 Button an 分離。

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

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

適用於

另請參閱