C#

George_George wrote:

But confused what means "catching untestable errors"

George_George wrote:

"not controlling programming flow"?

try
{
double y = 100.0 / slider.Value
}
catch (Exception)
{
//handler exception
}

is a bad way to write this code (remembing slider.Value could be 0 causing divide by 0 exception), a better way would be....

if (slider.Value != 0)
{
double y = 100.0 / slider.Value
}
else
{
handle error
} 

Derek Bartram wrote:

massive performance hit

George_George wrote:

What do you mean "didn't specify 'massive' which didn't help"

George_George wrote:

Application.ThreadException is for Windows Form application, not console and Windows Service application?

George_George wrote:

Windows Forms application?

George_George wrote:

you can not catch exception from other threads? Right?

George_George wrote:

"Also exceptions occurring in unmanaged resources won't be handled too"

using System;
using System.Threading;

namespace DelegateThread
{
    class Test
    {
        private static void Method2 (object input)
        {
            Console.WriteLine("Method1 is throwing exception");
            throw new ApplicationException("**** oops ****");
        }

        private static void Method1()
        {
            Console.WriteLine("Method1 is throwing exception");
            throw new ApplicationException("**** oops ****");
        }

        private static void Handler1 (object sender, EventArgs e)
        {
            Console.WriteLine ("I am here");
        }

        private static void Handler3(object sender, EventArgs e)
        {
            Console.WriteLine("I am here");
        }

        delegate void Method1Delegate();

        static void Main(string[] args)
        {
            Console.WriteLine("We first use a thread");

            AppDomain.CurrentDomain.ProcessExit += new EventHandler (Test.Handler1);
            AppDomain.CurrentDomain.UnhandledException +=new UnhandledExceptionEventHandler(Test.Handler3);
            
            Thread aThread
                = new Thread(new ThreadStart(Method1));
            aThread.Start();
            


            Thread.Sleep(5000);

            Console.WriteLine("Survived exception");

            return;

        } // main
    }
}

George_George wrote:

and I have tried even ProcessExit

George_George wrote:

After the handler for UnhandledException is executed, process is always terminated?

private static void Handler3(object sender, UnhandledExceptionEventArgs e)
{
    Exception exceptionOccured = e.ExceptionObject as Exception;
    string errorMessage = exceptionOccured.Message;
     Console.WriteLine("I am here");
}