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

            var student = await _context.Students.FindAsync(id);

            if (student == null)
            {
                return(NotFound());
            }
            return(View(StudentEditViewModel.MapFromDbModel(student)));
        }