C#winform应用程序只打开一次（实现）

winform 有的时候只能打开一次，下一次不要打开的运用

下面是code

 static class ApplicationStart
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            bool ExisFlag = false;
            System.Diagnostics.Process currentProccess = System.Diagnostics.Process.GetCurrentProcess();
            System.Diagnostics.Process[] currentProccessArray = System.Diagnostics.Process.GetProcesses();
            foreach (System.Diagnostics.Process p in currentProccessArray)
            {
                if (p.ProcessName == currentProccess.ProcessName && p.Id != currentProccess.Id)
                {
                    ExisFlag = true;
                }
            }

            if (ExisFlag)
            {
                return;
            }
            else
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new ModelFileGenerator.View.×××());
            }
        }
    } static