c# - Terminate application after unhandled exception

Question

I have a problem in a WPF application. I wrote this code:

public partial class App : Application
{
    public App()
    {
        AppDomain.CurrentDomain.UnhandledException += new 
            UnhandledExceptionEventHandler(MyHandler);
    }

    void MyHandler(object sender, UnhandledExceptionEventArgs e)
    {
        Exception exception = e.ExceptionObject as Exception;
        MessageBox.Show(exception.Message, "ERROR",
                        MessageBoxButton.OK, MessageBoxImage.Error);
    }

    ...
}

but when a unhandled exception happens, a lot of MessageBox appear to the screen (the exception happens in a timed routine) and after closing one of them, Windows signals that there is an unhandled exception.

How can I avoid multiple MessageBoxes?
How can I avoid the message of an unhandled exception?
How can I terminate the application after the exception?
As you can easily suppose, I would like to show a message (but only one) with my MessageBox and then terminate the application without any other message.

In a previous question related to this argument, Kyle Rozendo told me to use DispatcherUnhandledException. Is it necessary or the code I written is sufficient?

Thank you.

Answer 1

You can also use Application.Exit() or System.Environment.Exit(exitCode) to immediately shut down your application after you have shown your error dialog box.