public IHttpActionResult PutDoiChuXe(int id, DoiChuXe doiChuXe)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

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

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

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

            return(StatusCode(HttpStatusCode.NoContent));
        }
        public IHttpActionResult GetDoiChuXe(int id)
        {
            DoiChuXe doiChuXe = db.DoiChuXes.Find(id);

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

            return(Ok(doiChuXe));
        }
        public IHttpActionResult PostDoiChuXe(DoiChuXe doiChuXe)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            db.DoiChuXes.Add(doiChuXe);
            db.SaveChanges();

            return(CreatedAtRoute("DefaultApi", new { id = doiChuXe.ma_dang_ky }, doiChuXe));
        }
        public IHttpActionResult DeleteDoiChuXe(int id)
        {
            DoiChuXe doiChuXe = db.DoiChuXes.Find(id);

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

            db.DoiChuXes.Remove(doiChuXe);
            db.SaveChanges();

            return(Ok(doiChuXe));
        }