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I'm using the RelayCommand in my app. It's great for putting the code in the viewmodel, but how do I bind keystrokes to my command? RoutedUICommand has its InputGestures property, which makes the command automatically be invoked when I press the keystroke. (As an added bonus, it even makes the keystroke display in the MenuItem.) Unfortunately, there's no reusable interface for RoutedUICommand's extra properties, so I can't make a RelayUICommand that gets the same magic. I've already tried using InputBindings: <Window.InputBindings> <KeyBinding Key="PageUp" Command="{Binding SelectPreviousLayerCommand}"/> </Window.InputBindings> But that gets me a runtime exception, because KeyBinding.Command isn't a dependency property. (Actually, what it complains about is that KeyBinding isn't even a DependencyObject.) And since my RelayCommand is a property on my ViewModel (as opposed to the static field that RoutedUICommand is designed for), databinding is the only way I know of to reference it from XAML. How have you guys solved this? What's the best way to bind a keystroke to a RelayCommand?

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