Boolean CommandParameter in XAML

Question

I have this code (which works just right):

Answer 1

This might be a bit of a hack but you can derive from the KeyBinding class:

public class BoolKeyBinding : KeyBinding
{
    public bool Parameter
    {
        get { return (bool)CommandParameter; }
        set { CommandParameter = value; }
    }
}

Usage:

And another not so weird solution:

xmlns:s="clr-namespace:System;assembly=mscorlib"

    
    True
    False

Usage: