How to prevent clicks from passing through a control to the one below it

Question

I have a textbox in a groupbox, both with double click events. When I double click in the textbox both events are triggered.

How do I stop clicks in the textbox from

Answer 1

Because WPF uses a "tunneling / bubbling" model of event propagation, most events begin bubbling UP from the bottom of the visual tree. If you want to catch an event on the way down, there are Preview versions of the events that tunnel downwards. For example:

PreviewMouseDoubleClick

Set e.Handled = true in there.