// GET: Students/Details/5
        public async Task <IActionResult> Details(int?id)
        {
            if (id == null)
            {
                return(NotFound());
            }

            Student student = await studentService.GetStudentAsync(id.GetValueOrDefault());

            if (student == null)
            {
                return(NotFound());
            }

            ViewBag.StudentId = id;
            return(View(student));
        }
        // GET: Student/Details/5
        public async Task <ActionResult> Details(int?id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }

            Student student = await studentService.GetStudentAsync(id.GetValueOrDefault());

            if (student == null)
            {
                return(HttpNotFound());
            }

            ViewBag.StudentId = id;
            return(View(student));
        }