Why Re-throw Exceptions?

Question

I\'ve seen the following code many times:

try
{
    ... // some code
}
catch (Exception ex)
{
    ... // Do something
    throw new CustomException(ex);

            


        

Answer 1

Until I started using the EntLib ExceptionBlock, I was using them to log errors before throwing them. Kind of nasty when you think I could have handled them at that point, but at the time it was better to have them fail nastily in UAT (after logging them) rather than cover a flow-on bug.