Application.Current.ShutdownMode = ShutdownMode.OnExplicitShutdown;

Try

App.Current.Shutdown();

对我来说

Application.Current.Shutdown(); 

没有工作。

在xaml代码中，你可以调用一个预定义的SystemCommand:

Command="SystemCommands.MinimizeWindowCommand"

我认为这应该是首选的方式……

if (System.Windows.Forms.Application.MessageLoop) 
{
    // WinForms app
    System.Windows.Forms.Application.Exit();
    system.Environment.Exit(1);
}

private void _MenuExit_Click(object sender, RoutedEventArgs e)
{
   System.Windows.Application.Current.MainWindow.Close();
}

//Override the onClose method in the Application Main window

protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
{
    MessageBoxResult result =   MessageBox.Show("Do you really want to close", "",
                                          MessageBoxButton.OKCancel);
    if (result == MessageBoxResult.Cancel)
    {
       e.Cancel = true;
    }
    base.OnClosing(e);
}

Application.Current.ShutdownMode = ShutdownMode.OnExplicitShutdown;