Prevent other windows from overlapping my form?

Question

I have a form that is on the 2nd monitor and full-screen. I want to prevent all other windows from accidently being moved into the second screen and over lapping my form.

I also need to make sure that if a window gets moved to the other window and I use topmost, I don't want the other window to get lost.

I want to make the 2nd monitor( or my app ) un-overlappable. Not necessarily make it the topmost app.

This is ac# form.

What would be the best way to do this?

Answer 1

Form.TopMost property:

A topmost form is a form that overlaps all the other (non-topmost) forms even if it is not the active or foreground form. Topmost forms are always displayed at the highest point in the z-order of the windows on the desktop. You can use this property to create a form that is always displayed in your application, such as a Find and Replace tool window.