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Command Handler Key Binding

<Window x: Class="WpfApplication1.Window1"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     Title="commandWithHandler" Name="root">      <Window.CommandBindings>     <CommandBinding Command="ApplicationCommands.Open"                     Executed="OpenCmdExecuted"                     CanExecute="OpenCmdCanExecute"/>   </Window.CommandBindings>   <Window.InputBindings>     <KeyBinding Command="ApplicationCommands.Open" Gesture="CTRL+R" />   </Window.InputBindings>   <StackPanel>     <Button Command="ApplicationCommands.Open" Name="MyButton"             Height="50" Width="200">       Open (KeyBindings: Ctrl+R, Ctrl+0)     </Button>   </StackPanel> </Window> //File:Window.xaml.vb Imports System Imports System.Windows Imports System.Windows.Controls Imports System.Windows.Input Namespace WpfApplication1   Public Partial Class Window1     Inherits Window     Public Sub New()       InitializeComponent()     End Sub     Private Sub OpenCmdExecuted(target As Object, e As ExecutedRoutedEventArgs)       Dim command As [String], targetobj As [String]       command = DirectCast(e.Command, RoutedCommand).Name       targetobj = DirectCast(target, FrameworkElement).Name       MessageBox.Show(command & " : " & targetobj)     End Sub     Private Sub OpenCmdCanExecute(sender As Object, e As CanExecuteRoutedEventArgs)       e.CanExecute = True     End Sub   End Class End Namespace