How to invite for facebook application?

We have a Facebook application. We are using graph api in ASP.n开发者_运维问答et with C# 2008. We have done the authentication process (Fb Oauth Authentication). We want Facebook app invite functionality. When a user allows our app, he must see invite window. I tried a lot but I didn't find any solution. How can I do this?

You may check it here http://developers.facebook.com/docs/reference/oldjavascript/FB.Connect.inviteConnectUsers it is about connect user known by registered user as what we seen while using facebook to invite people