public ActionResult Create(Student stdObj)
        {
            if (ModelState.IsValid)
            {
                var id = MyDAL.SaveStudent(stdObj);
                ViewBag.ID = id;
                return RedirectToAction("Index");
            }

            return View(stdObj);
        }
        public static int SaveStudent(Student stdObj)
        {
            using (MyContext context = new MyContext())
            {
                if (stdObj.StudentID > 0)
                {
                    var std = context.Students.Where(p => p.StudentID == stdObj.StudentID).FirstOrDefault();
                    std.Name = stdObj.Name;
                    std.Address = stdObj.Address;
                    std.Age = stdObj.Age;

                }
                else
                {
                    context.Students.Add(stdObj);
                }
                context.SaveChanges();
            }

            return stdObj.StudentID;
        }
        public ActionResult Edit(Student stdObj)
        {
            var id = MyDAL.SaveStudent(stdObj);

            return RedirectToAction("Index");
        }