How do I stop WPF KeyDown events from bubbling up from certain contained controls (such as TextBox)?

Question

My program is quite large, and uses WPF, and I want to have a global shortcut key that uses \'R\', with no modifiers.
There are many controls such as TextBox, ListBox, Combo

Answer 1

Simply check what the OriginalSource is in your KeyDown event handler on the Window:

private void Window_KeyDown(object sender, KeyEventArgs e) {
    if(e.OriginalSource is TextBox || e.OriginalSource is DateTimePicker) //etc
    {
        e.Handled = true;
        return;
    }
}

Or if you are using InputBindings, experiment with setting e.Handled = true in either the KeyDown or the PreviewKeyDown event on your Window, rather than the individual controls. In anyway, I think OriginalSource is the key to your answer. (I swear that was not a pun).

Answer 2

There is an event when you handle KeyDown event and it should pass you a KeyEventArgs. From there you can set the Handled to true so that it won't bubble up.

Sample

private void TextBoxEx_KeyAction(object sender, KeyEventArgs e)
{
  e.Handled = true;
}