Question

Global meaning “in one place” e.g. not multiple try…catches e.g. on each event handler. Proven meaning “known to work” – I’m aware covering both .NET and other exceptions is not straightforward.

Thanks.

Solution coded from answers below.

Note: this is believed to cover exceptions from additional threads.

static class Program
{
    static void MyHandler(Exception e)
    { MessageBox.Show(e.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }

    static void MyThreadExceptionEventHandler(object sender, ThreadExceptionEventArgs args)
    { MyHandler(args.Exception);
        // App continues.
    }

    static void MyAppExceptionHandler(object sender, UnhandledExceptionEventArgs args)
    { MyHandler((Exception)args.ExceptionObject);
        // There follows a OS "needs to close" dialog, terminating app.
    }

    static void Main()
    {

        // For UI thread exceptions
        Application.ThreadException += 
            new ThreadExceptionEventHandler(MyThreadExceptionEventHandler);

        // Force all Windows Forms errors to go through our handler.
        Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);

        // For non-UI thread exceptions
        AppDomain.CurrentDomain.UnhandledException +=
            new UnhandledExceptionEventHandler(MyAppExceptionHandler);

        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }
}

Answer 1

Handle the AppDomain.CurrentDomain.UnhandledException and the Application.ThreadException you should be good!