public ActionResult Create(Schedule schedule)
        {
            if (ModelState.IsValid)
            {
                db.Schedules.Add(schedule);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            ViewBag.CourseId = new SelectList(db.Courses, "CourseId", "Name", schedule.CourseId);
            return View(schedule);
        }
 public ActionResult Edit(Schedule schedule)
 {
     if (ModelState.IsValid)
     {
         db.Entry(schedule).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.CourseId = new SelectList(db.Courses, "CourseId", "Name", schedule.CourseId);
     return View(schedule);
 }