[C#] 应用互斥锁/防双开

            System.Threading.Mutex mutex = new System.Threading.Mutex(false, "CottonGating");
            bool Running = !mutex.WaitOne(0, false);
            if (!Running)
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new Form1());
            }
            else
            {
                MessageBox.Show("程序已启动！");
            }