Server side form validating numbers
Developers had to write their own validation routines and cut and paste them in the various ASP scripts that needed to employ form validation techniques. Rather, it will dissect a particular control, the Custom Validator validation control.(For more information on the other validation Web controls be sure to read Server Control Form Validation.) By simply using the first four ASP.If all you're doing is reading and writing to the db, then properly parameterizing queries should take care of the problem.
Then use is Valid Container(container) method to determine the container is valid or not.
Server side validation is performed by a web server, after input has been sent to the server.
Client side validation is performed by a web browser, before input is sent to a web server.
Using Form Validation, you can validate the wizard-like interfaces such as tabs, collapsible panels, accordions.
When using these kind of components, the form fields are split into multiple regions which there is only active, visible one at any time.