I have created one web app usingmvc and in that usedform authentication for authenticate users.
i want to know if i want to create new user then there is a form which is having only limited field if i want to add fields like contact , address etc. then what i need to do ?
You are using the built-in asp.net membership providers whose defaults settings are such that they require a user to enter particular fields like username, password etc. to enter during registration. In your web.config, you can find this section :-
For the things, you are looking after, I would suggest you to first understand how this membership stuff works and then see how can you customize it accordingly.
You can start here :- Introduction to Membership