Im new to ASP.NET & C#. I have designed a webpage where a user has to give his details like Name, Age, Sex, Location and subnit it to another page. Now it works even if the user gives details only about his name & sex. SO im trying to program it in such a way that only if the user enters all the details, he should be able to submit. I have heard of something called Validation COntrols. I hope I have to make use of this mechanism for my purpose. Hence when I browsed in the net, I came to know about 5-6 functions of Validation COntrols. But im not sure how to incorporate them in my code. COuld anyone help me out?