CommandBinding.PreviewCanExecute Event
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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
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.
Identifier field | PreviewCanExecuteEvent |
Routing strategy | Tunneling |
Delegate | CanExecuteRoutedEventHandler |
- The corresponding bubbling event is CanExecute.
Προϊόν | Εκδόσεις |
---|---|
.NET Framework | 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9 |
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