ASP .net validations

Question

For validation in ASP.Net which one is better validation controls or JavaScript coding

Answer 1

Javascript validations can be easily overridden by potential hackers, they are just for user comfort (not requiring to postback). You should always do a server-side validation.

Validation controls take care of this automatically (provide client and server-side validations), so it's better to use them unless you do server validations on your own.

Answer 2

For WebForms I would suggest to use the Validator controls provided by Microsoft. The Validator controls by Microsoft validate the controls on the client side as well as on the server side.