Run one instance from the application

Question

I have a windows application (C#) and i need to configure it to run one instance from the application at the time , It means that one user clicked the .exe file and the appl

Answer 1

Edit : After the question was amended to include c#. My answer works only for vb.net application

select the Make single instance application check box to prevent users from running multiple instances of your application. The default setting for this check box is cleared, allowing multiple instances of the application to be run.

You can do this from Project -> Properties -> Application tab

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