Maintaining single instance application

Question

Hello. I have been working on this application of mine and got this problem. Running program through command line with different arguments opens different .exe process.

My question is how can i prevent from opening same file few times, and is it possible to send new command line arguments to already open instance of application.

Thanks.

Answer 1

There are standard .NET classes for that. Check out:

http://www.openwinforms.com/single_instance_application.html

http://www.smartasses.be/2009/04/24/single-instance-application-with-c/

http://www.google.be/search?source=ig&hl=nl&rlz=&q=SingleInstanceApplication&btnG=Google+zoeken&meta=

Answer 2

Here is a quick way to do it. Just use a mutex lock.

http://en.csharp-online.net/CSharp_FAQ:_How_ensure_that_only_one_instance_of_an_application_will_run

MSDN Mutex Lock