Connect to to Facebook and send and Invitation to join us. C#, MVC4

Please just developers who already create something using Facebook API. THXS Need a Visual Studio Solution using C#, MVC4. Need a Button "Invite your facebook Friends to register." Click on button and user has to login using facebook account. After that shows a blank page with all the Facebook Friends and a checkbox option to check all friends or user checks one by one button "send invitation" Redirect to to X page. Note don't know how really works!! if send a message via email or send a msg using facebook!! OR.... if is via email Its Ok using the simple way to send and email (im gonna change that) Thxs