Occurs when the command associated with this CommandBinding initiates a check to determine whether the command can be executed on the command target.
Assembly: PresentationCore (in PresentationCore.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
When the CanExecute method on a RoutedCommand is called, the PreviewCanExecute event is raised on the command target. If the event is not handled, the event is raised. If the command target has a CommandBinding for the command, the handler for that CommandBinding is called. If the command target does not have a CommandBinding for the command, the event bubbles up the element tree searching for an element that has a CommandBinding associated with the command.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2