Get IDs of invited Facebook users

I am using Facebook C# SDK and want to do a counter which counts the IDs of Facebook users who are invited to a URL.

In application, for example a person invites his/her friends to the application but I want to know how many people did he or she sent that invitation and who they are. So I must take an array that contains the IDs of invited Facebook users, then split it, then I can easily count how many people were invited.

Is t开发者_Go百科his possible? I mean, how can I get the IDs of invited users?

This is against the Facebook Platform Policies: see point IV 1: "You must not incentivize users to use (or gate content behind the use of) Facebook social channels". Point VII 2 states that invites are included under the definition of 'social channels'.

As such, I doubt that it is possible - and if it is, then it sounds like you'd be breaking these policies.