How do I detect the instance of another app running and then shut it down?

[Aaron Ackerman]

I have a helper app that runs in conjunction with my Main app. I want to
check to see if the main app is running once I intiate the helper app and
shut the Main app down if it is open.

 

[Jon Skeet [C# MVP]]

I have a helper app that runs in conjunction with my Main app. I want to
check to see if the main app is running once I intiate the helper app and
shut the Main app down if it is open.

See http://www.pobox.com/~skeet/csharp/faq/#one.application.instance