ExecutedRoutedEventHandler Delegate
Assembly: PresentationCore (in presentationcore.dll)
'Declaration Public Delegate Sub ExecutedRoutedEventHandler ( _ sender As Object, _ e As ExecutedRoutedEventArgs _ ) 'Usage Dim instance As New ExecutedRoutedEventHandler(AddressOf HandlerMethod)
/** @delegate */ public delegate void ExecutedRoutedEventHandler ( Object sender, ExecutedRoutedEventArgs e )
In XAML, you can use delegates but you cannot define your own.
Parameters
- sender
The source of the event.
- e
The event data.
This delegate contains the implementation logic for a RoutedCommand. Separating the implementation logic from the command allows the command to be invoked from different sources and types and enables the centralization of command logic.
For more information on commanding, see the Commanding Overview.
When you create an ExecutedRoutedEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event-handler delegates, see Events and Delegates.
This example creates an ExecutedRoutedEventHandler that opens a MessageBox when the command is executed.
Sub OpenCmdExecuted(ByVal sender As Object, ByVal e As ExecutedRoutedEventArgs) Dim command, targetobj As String command = CType(e.Command, RoutedCommand).Name targetobj = CType(sender, FrameworkElement).Name MessageBox.Show("The " + command + " command has been invoked on target object " + targetobj) End Sub
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Reference
System.Windows.Input NamespaceCommandBinding
ExecutedRoutedEventArgs