C# 중복 실행 방지 Mutex

   static class Program
    {
        /// <summary>
        /// 해당 응용 프로그램의 주 진입점입니다.
        /// </summary>
        [STAThread]
        static void Main()

        {

           bool isCreatedNew;
            System.Threading.Mutex mutex = new System.Threading.Mutex(true, Application.ProductName, out isCreatedNew);

            if (isCreatedNew)
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new FormMain());
                mutex.ReleaseMutex();
            }
        }
      }