# WPF Mouse Over Trigger

**URL:** <https://forum.kirupa.com/t/wpf-mouse-over-trigger/297037>\
**Category:** programming\
**Created:** [September 24, 2009, 3:19pm UTC](https://forum.kirupa.com/t/wpf-mouse-over-trigger/297037 "2009-09-24T15:19:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wpftester](https://avatars.discourse-cdn.com/v4/letter/w/977dab/32.png) [@wpftester](https://forum.kirupa.com/u/wpftester)\
**Post date:** [September 24, 2009, 3:19pm UTC](https://forum.kirupa.com/t/wpf-mouse-over-trigger/297037/1 "2009-09-24T15:19:52Z")

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I have a ( i think) simple question

how to make a trigger on a rectangle, that switches color on mouse over?

i really dont get it ☹ already tried so many xaml triggers

my rectangle is red, and what i need is, when you get with your mouse over my red triangle, the color changes into green (doesnt matter which colors).

need xaml code pls 🙂 -\> using blend 3 (wpf) !!