Debug vs Release (catch exceptions)

Question

5.00/5 (2 votes)

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Hi all,

I recently started testing my application in Release Build, The diffrence in execution speed is amazing (against debug mode).

I have an event in the main method that save any exception that occur during execution and save it in a file.

Here is the code

C#

[STAThread] 
        static void Main()
        {
//register the event 
            AppDomain.CurrentDomain.UnhandledException +=
                new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);

                    Application.EnableVisualStyles();
                    Application.SetCompatibleTextRenderingDefault(false);
                    Application.Run(new Updater());
            
        }
//if an exception occur in the app, it is saved in a file.
public static void CurrentDomain_UnhandledException(Object sender, UnhandledExceptionEventArgs e)
        {
            try
            {
                Exception ex = (Exception)e.ExceptionObject;
                StreamWriter streamUnhadeled = new StreamWriter("erreurs non gérées.txt", true);

                streamUnhadeled.WriteLine("-----------------------------------"+ DateTime.Now.ToString() +"-----------------------------------------");                
                streamUnhadeled.WriteLine(ex.Message);
                streamUnhadeled.WriteLine(ex.StackTrace);
                streamUnhadeled.WriteLine(ex.InnerException);
                streamUnhadeled.WriteLine(ex.TargetSite);
                streamUnhadeled.WriteLine(ex.Source);
                      
                streamUnhadeled.Flush();

                streamUnhadeled.Close();
                streamUnhadeled.Dispose();


                MessageBox.Show("Oops ! Contactez nous "
                   + "avec les informations suivantes :\n\n" + ex.Message + ex.StackTrace,
                   "Erreur fatale", MessageBoxButtons.OK, MessageBoxIcon.Stop);

            }
            finally
            {
                Application.Exit();
            }

        }

In Debug mode, this event(CurrentDomain_UnhandledException) works great, in Release mode, it dosent work at all, the application is closed when an exception occur.

Some one have any idea how to get exceptions in Relase mode?

Thanks

Posted 9-Jan-14 3:51am

Ziee-M

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Comments

ZurdoDev 9-Jan-14 10:22am

The description here might help: http://social.msdn.microsoft.com/Forums/en-US/22307a23-8df8-4816-98f1-1b1b9fef89de/appdomaincurrentdomainunhandledexception-new?forum=csharplanguage

2 solutions

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bowlturner · Answer 1 · 2014-01-09T04:29:00

Another approach is to wrap the main code in a try catch. Not sure why there is a difference between debug and release.

{
//register the event 
        try
        {
            AppDomain.CurrentDomain.UnhandledException +=
                new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
 
                    Application.EnableVisualStyles();
                    Application.SetCompatibleTextRenderingDefault(false);
                    Application.Run(new Updater());
        }
        catch (Exception ex)
        {
            CaughtException(ex);
        }
      }
//if an exception occur in the app, it is saved in a file.
public static void CaughtException(Exception ex)
        {
            try
            {
                StreamWriter streamUnhadeled = new StreamWriter("erreurs non gérées.txt", true);
 
                streamUnhadeled.WriteLine("-----------------------------------"+ DateTime.Now.ToString() +"-----------------------------------------");                
                streamUnhadeled.WriteLine(ex.Message);
                streamUnhadeled.WriteLine(ex.StackTrace);
                streamUnhadeled.WriteLine(ex.InnerException);
                streamUnhadeled.WriteLine(ex.TargetSite);
                streamUnhadeled.WriteLine(ex.Source);
                      
                streamUnhadeled.Flush();
 
                streamUnhadeled.Close();
                streamUnhadeled.Dispose();
 

                MessageBox.Show("Oops ! Contactez nous "
                   + "avec les informations suivantes :\n\n" + ex.Message + ex.StackTrace,
                   "Erreur fatale", MessageBoxButtons.OK, MessageBoxIcon.Stop);
 
            }
            finally
            {
                Application.Exit();
            }
 
        }

Ziee-M · Answer 2 · 2014-01-09T06:14:00

Solution 2

Ooops, it have nothing to do with Release nor debug, actually there was an exception occuring in the stream because the application is installed in the Programefiles so its an unauthorized access exception.

Thanks to bowlturner and RyanDev for your assistance.

Posted 9-Jan-14 6:14am

Ziee-M

Comments

Yvan Rodrigues 9-Jan-14 19:55pm

Yes, new StreamWriter() will throw an exception under many possible conditions, and you will never know.