Question

I’m just starting to use the Enterprise Library Exception Handling block.

It seems a little cumbersome.

Do I really have to do

 try  {      //Do something with a DirectoryInfo object  }  catch(DirectoryNotFoundException ex)  {    bool rethrow = ExceptionPolicy.Handle(ex, _exceptionPolicyName);     if(rethrow)         throw;  } 

Everywhere I want to handle exceptions?

Or should I just wrap the top level in

 try  {      //Entrypoint code  }  catch(Exception ex)  {    bool rethrow = ExceptionPolicy.Handle(ex, _exceptionPolicyName);     if(rethrow)         throw;  } 

I was under the impression I could aspect this on with attributes?

Answer 1

How many places do you need to handle exceptions?

This Application Block is mainly used for handling exceptions on the boundaries of layers. For instance, the top-level code of your Data Access Layer might use this so you can configure whether and how to log DAL exceptions, whether to wrap a non-DAL exception, etc. But your private, inner methods should not handle exceptions at all.

And no, EAL doesn’t do attributes.