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

you should handle e.Handled in the PreviewDoubleClick because tunneled events happens before bubbled up ones.

also why would you need to handle that event in both textbox and groupbox ? as it is getting fired in both because 2 separate events are getting fired.