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CommandBinding.PreviewCanExecute Event
Definition
- Namespace:
- System.Windows.Input
- Assembly:
- PresentationCore.dll
Important
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Occurs when the command associated with this CommandBinding initiates a check to determine whether the command can be executed on the current command target.
public:
event System::Windows::Input::CanExecuteRoutedEventHandler ^ PreviewCanExecute;public event System.Windows.Input.CanExecuteRoutedEventHandler PreviewCanExecute;member this.PreviewCanExecute : System.Windows.Input.CanExecuteRoutedEventHandler Public Custom Event PreviewCanExecute As CanExecuteRoutedEventHandler Public Event PreviewCanExecute As CanExecuteRoutedEventHandler Event Type
Remarks
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
| Item | Value |
|---|---|
| Identifier field | PreviewCanExecuteEvent |
| Routing strategy | Tunneling |
| Delegate | CanExecuteRoutedEventHandler |
- The corresponding bubbling event is CanExecute.
Applies to
See also
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