Application Instance is already running in C#

How to make sure that only one instance of application is running in C#

 

 

public static void Main(string[] args)

        {

// ----------------------------------------------------

            bool running;

            Mutex mutex = new Mutex(true, “Your application name”, out running);

 

            if (!running)

            {

                Console.WriteLine("Another instance is already running.");

                Console.WriteLine (Messages.ExitMessage);

                Console.ReadKey(false);

                return;

            }

// -----------------------------------------------------

 

 

Your all working code will go here

 

 

// -------- Don’t forget to include this

 

            GC.KeepAlive(mutex);  //1

 

            mutex.ReleaseMutex(); //2

  }

 

Note: Use only one either 1 or 2 both will works, but make sure one is present.

 

Now only one application will run at a time.