public IHttpActionResult PutDM_NhomMatHang(int id, DM_NhomMatHang dM_NhomMatHang)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

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

            db.Entry(dM_NhomMatHang).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!DM_NhomMatHangExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(StatusCode(HttpStatusCode.NoContent));
        }
        public IHttpActionResult GetDM_NhomMatHang(int id)
        {
            DM_NhomMatHang dM_NhomMatHang = db.DM_NhomMatHang.Find(id);

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

            return(Ok(dM_NhomMatHang));
        }
        public IHttpActionResult PostDM_NhomMatHang(DM_NhomMatHang dM_NhomMatHang)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            db.DM_NhomMatHang.Add(dM_NhomMatHang);
            db.SaveChanges();

            return(CreatedAtRoute("DefaultApi", new { id = dM_NhomMatHang.id }, dM_NhomMatHang));
        }
        public IHttpActionResult DeleteDM_NhomMatHang(int id)
        {
            DM_NhomMatHang dM_NhomMatHang = db.DM_NhomMatHang.Find(id);

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

            db.DM_NhomMatHang.Remove(dM_NhomMatHang);
            db.SaveChanges();

            return(Ok(dM_NhomMatHang));
        }