Disabling global KeyBindings in some controls in wpf c#

问题

I have a main window with some keybindings like this:

<Window.InputBindings>
  <KeyBinding Command="{Binding RotateCommand}"
              CommandParameter="left"
              Key="L">
  </KeyBinding>
  <KeyBinding Command="{Binding RotateCommand}" 
              CommandParameter="right"
              Key="R" />
</Window.InputBindings>

The problem is that I am unable to type this letters in any textboxes in that window, keys L and R just call commands.

Is there any way to disable KeyBindings inside of some controls? (Maybe when some controls have a focus).

I search through the internet and find this, but I can't get access to CanExecute routed event because I'm using mvvm model for command bindings.

来源：https://stackoverflow.com/questions/28393307/disabling-global-keybindings-in-some-controls-in-wpf-c-sharp