Is there a way to prevent a vb exe file from being opened multiple times while its already running?

I have a program that I created that I have sitting in the sys tray and I don't want users to be able to open the program while it is already running. How do I do this?

There are a couple ways. You can use mutex to check for multiple running applications

http://www.freevbcode.com/ShowCode.Asp?ID=5845

or you can grab all the processes running into a collection then loop through the process names and compare them to the running application and if it's the same exit the application. I bet someone else has a different way to do it as well.

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Jason Hall

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