public async Task <IActionResult> Edit(int id, [Bind("id,student_id,subject_id,teacher_id,grade,date")] student_subject_registration student_subject_registration)
        {
            if (id != student_subject_registration.id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(student_subject_registration);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!student_subject_registrationExists(student_subject_registration.id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            ViewData["student_id"] = new SelectList(_context.students, "code", "code", student_subject_registration.student_id);
            ViewData["subject_id"] = new SelectList(_context.subject, "id", "id", student_subject_registration.subject_id);
            ViewData["teacher_id"] = new SelectList(_context.teachers, "id", "id", student_subject_registration.teacher_id);
            return(View(student_subject_registration));
        }
        public async Task <IActionResult> Create([Bind("id,student_id,subject_id,teacher_id,grade,date")] student_subject_registration student_subject_registration)
        {
            if (ModelState.IsValid)
            {
                _context.Add(student_subject_registration);
                await _context.SaveChangesAsync();

                return(RedirectToAction(nameof(Index)));
            }
            ViewData["student_id"] = new SelectList(_context.students, "code", "code", student_subject_registration.student_id);
            ViewData["subject_id"] = new SelectList(_context.subject, "id", "id", student_subject_registration.subject_id);
            ViewData["teacher_id"] = new SelectList(_context.teachers, "id", "id", student_subject_registration.teacher_id);
            return(View(student_subject_registration));
        }