public List<Lecture> GetLecturesForStaff(string staffNumber)
 {
     LectureHandler myHandler = new LectureHandler(); return myHandler.GetLectureForStaffMemeber(staffNumber);
 }
 public bool InsertLecture(Lecture _lecture)
 {
     LectureHandler myHandler = new LectureHandler(); return myHandler.NewLecture(_lecture);
 }
 public Lecture GetLecture(int LUI)
 {
     LectureHandler myHandler = new LectureHandler(); return myHandler.GetLecture(LUI);
 }