How to make a WPF window be on top of all other windows of my app (not system wide)?

Question

I want my window to be on top of all other windows in my application only. If I set the TopMost property of a window, it becomes on top of all windows of al

Answer 1

Simple to do it in XAML, and surprised that nobody posted this answer yet. In the following example, the Window is defined in a ResourceLibrary (notice the x:Key), but you can also use this XAML binding on a standalone Page-style WPF resource.