private void ProcessSuccesfulFacebookCallback(IDictionary <string, object> result)
{
string accessToken = (string)result["access_token"];
// incase the expires on is not present, it means we have offline_access permission
DateTime expiresOn = result.ContainsKey("expires") ? DateTime.UtcNow.AddSeconds(Convert.ToDouble(result["expires"])) : DateTime.MaxValue;
var fb = new FacebookClient(accessToken);
dynamic me = fb.Get("me?fields=id,name");
string id = me.id;
string name = me.name;
// do your custom logic to store the user here
InMemoryUserStore.AddOrUpdate(new FacebookUser {
AccessToken = accessToken, FacebookId = id, Name = name
});
// set the forms auth cookie
FormsAuthentication.SetAuthCookie(id, false);
}