public ActionResult CreateSchedule()
        {
            // DropDown
            //ScheduleViewModel

            //https://localhost:44332/ManageStudio/CreateSchedule
            var classes  = db.getClassActiveList();
            var teachers = db.getTeacherList();
            var rooms    = db.getRoomActiveList();


            var scheduleViewModel = new ScheduleViewModel
            {
                Classes  = classes,
                Teachers = teachers,
                Rooms    = rooms
            };


            return(View(scheduleViewModel));
        }