CODEWITHSUNDEEP
c#winforms
someuser193
someuser193

Reputation: 55

Enforce one instance of an application winform c#

Without using a global mutex lock in an application, is there any safe way to ensure only one instance of an application is running on a system? I have found out that bugs and errors that occur during an applications lifetime in memory can lead to many problems within a system, especially if pared with a global mutex lock. Any suggestions would be much appreciated.

Thanks for reading.

Upvotes: 1

Views: 2272

Answers (1)

JeremyRock
JeremyRock

Reputation: 406

You can use Mutex to ensure a single instance app. Put the following code in the Main function of your WinForms app:

static class Program
{
    static Mutex mutex = new Mutex(true, "<some_guid_or_unique_name>");

    [STAThread]
    static void Main()
    {
        if (mutex.WaitOne(TimeSpan.Zero, true))
        {
           // do the app code
           Application.Run();

           // release mutex after the form is closed.
           mutex.ReleaseMutex();
           mutex.Dispose();
        }
    }
}

Upvotes: 4

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