public ActionResult Edit(int id, MVCSample.Models.Student std)
 {
     try
     {
         // TODO: Add update logic here
         Student selectedStudent = GetStudentById(id);
         selectedStudent.StudentName = std.StudentName;
         selectedStudent.Age         = std.Age;
         return(RedirectToAction("Index"));
     }
     catch
     {
         return(View());
     }
 }
        public ActionResult Create(MVCSample.Models.Student std)
        {
            try
            {
                // TODO: Add insert logic here
                std.StudentId = ++MvcApplication.globalStudentId;
                MvcApplication.studentsList.Add(std);

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