wpf 菜单 键盘快捷键 WPF Keyboard Shortcuts in Menu Item

Source: http://expression.microsoft.com/zh-cn/library/system.windows.input.routedcommand(printer).aspx

cs code:

namespace NameSpace
{
    public partial class MainForm : Window
    {...

public static RoutedCommand CustomRoutedCommandZoomIn = new RoutedCommand();
public static RoutedCommand CustomRoutedCommandZoomOut = new RoutedCommand();

private void CommandBinding_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            Control target = e.Source as Control;

            if (target != null)
            {
                e.CanExecute = true;
            }
            else
            {
                e.CanExecute = false;
            }
        }

private void MenuItemZoomIn_Click(object sender, RoutedEventArgs e)
        {
              // Do zoom in
        }

        private void MenuItemZoomOut_Click(object sender, RoutedEventArgs e)
        {
            // Do zoom out
        }

xaml:

<Window .....
xmlns:mynamespace="clr-namespace:NameSpace"
.....>

<Window.CommandBindings>
 <CommandBinding Command="{x:Static mynamespace:MainForm.CustomRoutedCommandZoomIn}" CanExecute="CommandBinding_CanExecute" Executed="MenuItemZoomIn_Click"/>
        <CommandBinding Command="{x:Static mynamespace:MainForm.CustomRoutedCommandZoomOut}" CanExecute="CommandBinding_CanExecute" Executed="MenuItemZoomOut_Click"/>
</Window.CommandBindings>

<Window.InputBindings>
 <KeyBinding Command="{x:Static mynamespace:MainForm.CustomRoutedCommandZoomIn}" Key="I" Modifiers="Ctrl"></KeyBinding>
        <KeyBinding Command="{x:Static mynamespace:MainForm.CustomRoutedCommandZoomOut}" Key="O" Modifiers="Ctrl"></KeyBinding>
</Window.InputBindings>

...
 <MenuItem Header="Zoom _In" InputGestureText="Ctrl+I" Command="{x:Static mynamespace:MainForm.CustomRoutedCommandZoomIn}"></MenuItem>
                <MenuItem Header="Zoom _Out" InputGestureText="Ctrl+O" Command="{x:Static mynamespace:MainForm.CustomRoutedCommandZoomOut}"></MenuItem>              
...

</Window>

Click or shortcuts work well now.

If you haveany better solution please let me know.

Thanks