Question

When i throw or catch any kind of an exception i would like to specify an error code along with it to be able to do something like the following:

Writeline(ex.Source + ex.Message + ex.Code);

can you show me a way or suggest something?

thank you all.

Answer 1

You have two choices:

1) If you are throwing your own exception, you can inherit from the exception class and add whatever properties you would like.

2) You can add name/value pairs to any Exception’s Data dictionary.

From the MSDN documentation, to add information to Data:

   try
   {
       // do something
   }
   catch (Exception e)
   {
        e.Data["ExtraInfo"] = "Information from NestedRoutine1.";
        e.Data.Add("MoreExtraInfo", "More information from NestedRoutine1.");
        throw e;
   }

and to use that information:

        if (e.Data != null)
        {
            Console.WriteLine("  Extra details:");
            foreach (DictionaryEntry de in e.Data)
                Console.WriteLine("    The key is '{0}' and the value is: {1}", de.Key, de.Value);
        }