C# Desktop Application "Encounters an error and has to exit" on first run of the day

Question

Hello,

It seems I tend to attract strange issues. This time, I have written a C# application, and handled most of the exceptions I can find. The problem is, when I run the installed/bundled version on any PC for the first time in a day (after the PC has been shut down and started after a while) it comes across some error and has to shutdown the application (even though the try-catch block surrounding the Main() does not fire). The application does not throw the same error on subsequent runs.

static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            // your event handler
            Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
            // your event handler
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
            // you try catch block and Application.Run

            try
            {
#if(!DEBUG)
                    Application.EnableVisualStyles();
                    Application.Run(new newTerminal());
#else
                Application.EnableVisualStyles();
                newTerminal terminal = new newTerminal();
                terminal.ShowDialog();
#endif
            }
            catch (Exception ex)
            {
                MessageBox.Show("There was an error loading the modules. Please restart the application.", "Oops!");
                //return;
                CreateLogFiles.ErrorLog("Error: " + ex.Message);
                throw ex;
            }
        }

        static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            MessageBox.Show("There was an error loading the modules. Please restart the application.", "Oops!");
            Application.Exit();
        }

        static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
        {
            MessageBox.Show("There was an error loading the modules. Please restart the application.", "Oops!");
            Application.Exit();
        }
}

There's the full code in Main().Any help is appreciated. I'm running out of time, and getting a bit desparate. Thanks in advance!

Answer 1

Try using AppDomain.UnhandledException event to log the error before app is closed.

Answer 2

Hello, surrounding the Main you mean something like this?

    static void Main()
    {
        try
        {
            //code
        }
        catch (Exception e)
        {
            //code
        }
    }

If you do mean something like this, then try add thread exception handlers:

    static void Main()
    {

        // your event handler
        Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
        // your event handler
        AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
        // you try catch block and Application.Run
    }

And if this solution doesnt help you, you can always read about application errors in Windows events repository (control panel-> administration -> events).