What are ASP.NET Validation controls

ASP.NET FAQS	Validation Controls FAQS >>
1. What are ASP.NET Validation controls?
Asp.Net validation controls are used to validate user input based on validation criteria. Validation controls can be used to address the following questions. Did user enter value for required field?  Is the entered input is appropriate kind of data? Is the data within required range? The validation controls check the validity of data entered in associated server controls on the client before the page is posted back to the server.
ASP.NET FAQS	Validation Controls FAQS >>