CommandBinding.PreviewCanExecute Event


Occurs when the command associated with this CommandBinding initiates a check to determine whether the command can be executed on the current command target.

 event System::Windows::Input::CanExecuteRoutedEventHandler ^ PreviewCanExecute;
public event System.Windows.Input.CanExecuteRoutedEventHandler PreviewCanExecute;
member this.PreviewCanExecute : System.Windows.Input.CanExecuteRoutedEventHandler 
Public Event PreviewCanExecute As CanExecuteRoutedEventHandler 


When the CanExecute method on a RoutedCommand is called, the PreviewCanExecute event is raised on the command target if the command target has a CommandBinding for the command. Then the CanExecute handler for that CommandBinding is called. If the command target does not have a CommandBinding for the command, the CanExecute event bubbles up the element tree searching for an element that has a CommandBinding associated with the command. If the event is not handled, the CanExecute event is raised.

Routed Event Information

Identifier field PreviewCanExecuteEvent
Routing strategy Tunneling
Delegate CanExecuteRoutedEventHandler

Applies to

See also