Question

I need to create Watchgog application that will keep track of main application. If my main application is crashed/closed/ended by any means, this watchdog application will activate it again.

I can do this by scanning running process at regular intervals, but this is resource intensive process. Can I get any notification when process is terminated (not Form Closing event, it does not work when application crashes)?

Answer 1

Process class does give you such functions.

WaitForExit() (method) Instructs the Process
component to wait indefinitely for the
associated process to exit.
Exited (event) Occurs when a process exits.

So you need to find your process only once and than in your watchdog use provided method or event.