public async Task <IActionResult> PutChamCongTangCa(DateTime id, ChamCongTangCa chamCongTangCa)
        {
            if (id != chamCongTangCa.NgayChamCong)
            {
                return(BadRequest());
            }

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

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

            return(NoContent());
        }
        public async Task <ActionResult <ChamCongTangCa> > PostChamCongTangCa(ChamCongTangCa chamCongTangCa)
        {
            _context.ChamCongTangCa.Add(chamCongTangCa);
            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (ChamCongTangCaExists(chamCongTangCa.NgayChamCong))
                {
                    return(Conflict());
                }
                else
                {
                    throw;
                }
            }

            return(CreatedAtAction("GetChamCongTangCa", new { id = chamCongTangCa.NgayChamCong }, chamCongTangCa));
        }