Hi Vinny,

 If you have a look at the ExceptionContext class you see all the possiblte exception types.  However any .NET exception could actually be the cause so you would than need to look at the inner exception to see what it was.  The inner exception will pass you back the actual .NET (ie: System.IO Exception, SQL Exceptions etc).

I hope i've answered your question. Let me know if there's anything further.

-mike