private async void SendDialogButton_Click(Object sender, Windows.UI.Xaml.RoutedEventArgs e) { FBSession s = FBSession.ActiveSession; if (!s.LoggedIn) { Debug.WriteLine("The user is no longer logged in."); } else { PropertySet parameters = new PropertySet(); parameters.Add("link", "http://example.com"); FBResult result = await s.ShowSendDialogAsync(parameters); Debug.WriteLine("Showed 'Send' dialog."); } }