CommandManager.RemoveCanExecuteHandler Method

Definition

Namespace:

System.Windows.Input

Assembly:

PresentationCore.dll

Detaches the specified CanExecuteRoutedEventHandler from the specified element.

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

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

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

Public Shared Sub RemoveCanExecuteHandler (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)

See also

• RoutedCommand
• ICommand