Prevent C# console from closing on exception

Question

_{Wednesday, April 30, 2014 6:05 AM}

Hi,

i am writing a console timer job to send automated email. every has being successfully.. but for any code, there might be some exception being surface due to unforeseen circumstances. therefore i would like to check if there is a way to stop the console from closing when there is a exception?

All replies (8)

_{Wednesday, April 30, 2014 9:15 AM ✅Answered}

Add a while loop.

static void Main(string[] args){    while(true)    {       try       {          // put all code in here ...                        try          {              File.Open("Not An Existing File", FileMode.Open); // test an exception          }          catch (Exception e)          {              Console.WriteLine(e.Message);          }              }       finally        {        Console.Write("Press Enter to close window ...");        Console.Read();       }    }}

jdweng

_{Wednesday, April 30, 2014 6:46 AM}

I think that the only way you can achieve it is to put some try-catch blocks around your code, each one give back the precise info about the raised exception.

Than in main() you put a nother try-catch block to intercept the top-level raised exception and, i.e. write in the console output.

Note that with this solution the console won't close, but won't work anymore since a restart.

Davide 'n3wt0n' Benvegnù

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If you think that my answer resolve your issue, plase "Mark it as answer".

_{Wednesday, April 30, 2014 6:48 AM}

You can structure your console main method like this

 static void Main(string[] args)
        {
            DoSomeWork();
        }

        static void DoSomeWork()
        {
            try {
                // specify all the main method code here and call  it from main
               
            }
            catch { 
                //log exceptions somewhere
                Console.WriteLine("Some error occured, do you want to try again? Enter 'Y' or 'N' to exit");
                if (((ConsoleKeyInfo)Console.ReadKey()).Key == ConsoleKey.Y)
                {
                    DoSomeWork();
                }
                
            }
        }

Hope this helps!

Ovais Mehboob Ahmed Khan http://ovaismehboob.wordpress.com

_{Wednesday, April 30, 2014 8:10 AM}

i would like to check if there is a way to stop the console from closing when there is a exception?

This should work:

static void Main(string[] args)
{
    try
    {
       // put all code in here ...
       
       
       try
       {
           File.Open("Not An Existing File", FileMode.Open); // test an exception
       }
       catch (Exception e)
       {
           Console.WriteLine(e.Message);
       }
       


    }
    finally 
    {
        Console.Write("Press Enter to close window ...");
        Console.Read();
    }
}

- Wayne

_{Wednesday, April 30, 2014 8:41 AM}

hi.. thanks for all the respond... sorry that i forget to mention that the console application is suppose to be fully automated once deploy.. is there anywat for it to loop back to preform its normal task?

_{Wednesday, April 30, 2014 9:18 AM}

You can use this kind of approach:

http://social.msdn.microsoft.com/Forums/vstudio/en-US/a23f5411-3233-420a-aeeb-fac88305411b/prevent-console-application-from-terminating?forum=netfxbcl

Davide 'n3wt0n' Benvegnù

If you found my answer helpful, please vote it.
If you think that my answer resolve your issue, plase "Mark it as answer".

_{Wednesday, April 30, 2014 10:13 AM}

Yes. If you wrap the inside part of the  loop with the try and catch, the loop will not stop.

Noam B.

Do not Forget to Vote as Answer/Helpful, please. It encourages us to help you...

_{Wednesday, April 30, 2014 1:45 PM}

i forget to mention that the console application is suppose to be fully automated once deploy.. is there anywat for it to loop back to preform its normal task?

Do you really think it's wise and prudent to keep the application running indefinitely
after an unknown or unhandled exception has been thrown?

Your original issue was how to keep the console window from closing after an exception.
Doesn't that imply that the application is terminating? If it isn't, won't the console
window remain open anyway?

• Wayne