WPF的启动项

 public partial class App : Application
    {
        protected override void OnStartup(StartupEventArgs e)
        {
            Application.Current.ShutdownMode = System.Windows.ShutdownMode.OnExplicitShutdown;
            
             if (******)
             {
                 base.OnStartup(e);
                 Application.Current.ShutdownMode = ShutdownMode.OnMainWindowClose;
                 MainWindow window = new MainWindow();
                 window.Show();
             }
             else
             {
                 if (System.Windows.MessageBox.Show("Can‘t open the software! ", "Warning", System.Windows.MessageBoxButton.OK) == System.Windows.MessageBoxResult.OK)
                 {
                     this.Shutdown();
                 }
             }
        }
        //static App()
        //{
        //    DispatcherHelper.Initialize();
        //}
    }