Brad Wilson Philosophical naturalist who writes code (xUnit.net), loves music, plays games (board & PC), tells bad jokes, & makes up words. Ravenclaw. He/him. Introduction In ASP.NET MVC 2, we shipped both client- and server-side validation support. The client-side validation that we included in MVC 2 was a custom validation system written against ASP.NET Ajax. We also included an experimental ver