public async Task <IActionResult> PutExamSub([FromRoute] int id, [FromBody] ExamSub examSub)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != examSub.ExamSubAutoId)
            {
                return(BadRequest());
            }

            _context.Entry(examSub).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!ExamSubExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <IActionResult> PostExamSub([FromBody] ExamSub examSub)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            _context.ExamSub.Add(examSub);
            await _context.SaveChangesAsync();

            return(CreatedAtAction("GetExamSub", new { id = examSub.ExamSubAutoId }, examSub));
        }