// GET: GroupTimetables/Details/5
        public ActionResult Details(int id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }
            GroupTimetableBridge groupTimetable = db.GetGroupTimetableBridge(id);

            if (groupTimetable == null)
            {
                return(HttpNotFound());
            }
            return(View(groupTimetable));
        }
        // GET: GroupTimetables/Edit/5
        public ActionResult Edit(int id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }
            GroupTimetableBridge groupTimetable = db.GetGroupTimetableBridge(id);

            if (groupTimetable == null)
            {
                return(HttpNotFound());
            }
            ViewBag.GroupID     = new SelectList(db.GetGroup(), "GroupID", "GroupID", groupTimetable.GroupID);
            ViewBag.TimetableID = new SelectList(db.GetTimetable(), "TimeTableId", "Day", groupTimetable.ID);
            return(View(groupTimetable));
        }