public IHttpActionResult PutChotGiaoThong(int id, ChotGiaoThong chotGiaoThong)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

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

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

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

            return(StatusCode(HttpStatusCode.NoContent));
        }
        public IHttpActionResult GetChotGiaoThong(int id)
        {
            ChotGiaoThong chotGiaoThong = db.ChotGiaoThong.Find(id);

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

            return(Ok(chotGiaoThong));
        }
        public IHttpActionResult PostChotGiaoThong(ChotGiaoThong chotGiaoThong)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            db.ChotGiaoThong.Add(chotGiaoThong);
            db.SaveChanges();

            return(CreatedAtRoute("DefaultApi", new { id = chotGiaoThong.ma_chotGT }, chotGiaoThong));
        }
        public IHttpActionResult DeleteChotGiaoThong(int id)
        {
            ChotGiaoThong chotGiaoThong = db.ChotGiaoThong.Find(id);

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

            db.ChotGiaoThong.Remove(chotGiaoThong);
            db.SaveChanges();

            return(Ok(chotGiaoThong));
        }