public ActionResult Create(ExamTB e)
 {
     try
     {
         // TODO: Add insert logic here
         objexam.ExamTBs.InsertOnSubmit(e);
         objexam.SubmitChanges();
         return(RedirectToAction("Index"));
     }
     catch
     {
         return(View());
     }
 }
        public ActionResult Edit(int id, ExamTB e)
        {
            try
            {
                var editdata = objexam.ExamTBs.SingleOrDefault(ee => ee.Id == id);

                UpdateModel(editdata);
                objexam.SubmitChanges();


                return(RedirectToAction("Index"));
            }
            catch
            {
                return(View());
            }
        }