Monitor a windows executable

Question

Hello all,

I want to monitor a windows application (developed with windows forms),
and make sure that the application is always running.

The windows application should open on startup.
If because of an application crash or if someone closes the window, the application should automatically open.

I think I need a windows service or something, which continuously monitors the said application.
If closed, the monitoring software should immediately open the application again.
How can I achieve this?
Can I monitor windows executables using a windows service??

Thank you for helping me out.