Some users are not interested in spending enough time to enter the correct information into a form, and in some cases, users might even intentionally enter false information to gain access or get past a certain step in your application's workflow process.
One of the first steps is to understand what validating data means.
This paper introduces these new controls and discusses tips and tricks on working with them in practical scenarios.
(34 printed pages) Introduction Looking at Validation The Required Field Validator Control The Compare Validator Control The Range Validator Control The Regular Expression Validator Control The Custom Validator Control The Validation Summary Control Conclusion In your studies of ASP.
If you are using MVC, I would replace the controls with standard HTML controls and use data annotations for your validation.