应用程序单例模式

应用程序单例wpf代码

public partial class App : Application
    {
        private Mutex mutex;

        public App()
        {
            this.Startup += App_Startup;
        }

        private void App_Startup(object sender, StartupEventArgs e)
        {
            
            bool ret;
            mutex = new System.Threading.Mutex(true, "ElectronicNeedleTherapySystem", out ret);
            ///应用程序单例
            if (!ret)
            {
                MessageBox.Show("已有一个程序实例运行");
                Process.GetCurrentProcess().Close();
                Environment.Exit(0);
            }           
        }

    }