ASP.NET Debug.Assert Handler [VB.NET Version] is one of the useful tutorial through which the author explains about the debug assert handler. Debug.Assert is an important component which reacts only when the expression arrives the result as true or yes. The webmasters could generate a very useful class which is set to activate only in DEBUG mode and ONLY on "LOCALHOST". This article is one of the very useful tutorial for the beginners to update their knowledge of error handling in ASP.NET. The objective of this tutorial is to get notified by an alert email for the every error on web page to list of people, who are capable to find the solution for it.