private static void CommandProperty_Changed(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
Control element = dependencyObject as Control;
if (element != null)
{
KeyDownBehavior behavior = GetOrCreateBehavior(element);
behavior.Command = e.NewValue as ICommand;
}
}
private static KeyDownBehavior GetOrCreateBehavior(Control element)
{
KeyDownBehavior behavior = element.GetValue(KeyDownBehaviorProperty) as KeyDownBehavior;
if (behavior == null)
{
behavior = new KeyDownBehavior(element);
element.SetValue(KeyDownBehaviorProperty, behavior);
}
return(behavior);
}
public static void SetKeyDownBehavior(DependencyObject obj,
KeyDownBehavior value)
{
obj.SetValue(KeyDownBehaviorProperty, value);
}