Question

I’m trying to crash LINQPad4 using the following C# statement:

new Thread(() => new Thread(() => { throw new Exception(); }).Start()).Start();

An unhandled exception dialog is shown, but the process doesn’t die. I suppose IsTerminating = true like in all UnhandledThreadExceptions… how does it stop the process from dying?

Answer 1

it has a global exception handler for all non UI thread exceptions as well, something like this in the Main method:

AppDomain.CurrentDomain.UnhandledException += 
        new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);

there are also other small things to do of course plus as usual the try/catch around the Application.Run.

see a full article and details here: C# Tutorial – Dealing With Unhandled Exceptions

Edit: hb. try to debug this one: 😉

using System;
using System.Threading;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);

            new Thread(() => new Thread(() => { throw new ApplicationException("Ciao"); }).Start()).Start();

            try
            {
                Application.Run(new Form1());
            }
            catch (Exception exc)
            {
                System.Diagnostics.Debug.WriteLine(exc.Message);
            }
        }

        static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            // here catching Unhandled Exceptions
            System.Diagnostics.Debug.WriteLine(e.ExceptionObject.ToString());
        }
    }
}