Different ways of Validating ASP.NET Forms
An article explain different ways of validations by Shahed Khan explains :
- ASP.NET Validation Controls
- ASP.NET AJAX ValidatorCallout
- ASP.NET AJAX Futures: Validators
- Subsonic Validation
- Validation Everywhere (CodePlex)
- Web Client Validation Bundle
- Enterprise Library 3.0 Validation Block
- .NetTier Validation Rule Engine
Read more here http://geekswithblogs.net/shahed/archive/2007/12/16/117760.aspx