private void Button_Tap(object sender, System.Windows.Input.GestureEventArgs e) { MemberType member = memberView.SearchMemberCollections.Where(x => x.Username == MemberAutocomplete.Text).FirstOrDefault(); BoardType board = PhoneApplicationService.Current.State["CurrentBoard"] as BoardType; if (member != null) { memberView.AddNewUserToBoard(board.ID, member.ID); } }