private void HandleAddLecture(object parameter) { var newLecture = new AddLectureModel(); LoadData.CreateLectures(newLecture, AppCache.Config.AccessToken, this.Id, () => { var lecture = new LectureViewModel(); lecture.Name = newLecture.Name; lecture.HomeworkDeadline = newLecture.HomeworkDeadline; this.Lectures.Add(lecture); }); }