// POST api/Booking
        public HttpResponseMessage PostTblCustomerBooking(TblCustomerBooking tblcustomerbooking)
        {
            if (ModelState.IsValid)
            {
                _db.TblCustomerBookings.Add(tblcustomerbooking);
                _db.SaveChanges();

                HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, tblcustomerbooking);
                response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = tblcustomerbooking.customer_id }));
                return response;
            }
            else
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest);
            }
        }
        // PUT api/Booking/5
        public HttpResponseMessage PutTblCustomerBooking(int id, TblCustomerBooking tblcustomerbooking)
        {
            if (ModelState.IsValid && id == tblcustomerbooking.customer_id)
            {
                _db.Entry(tblcustomerbooking).State = EntityState.Modified;

                try
                {
                    _db.SaveChanges();
                }
                catch (DbUpdateConcurrencyException)
                {
                    return Request.CreateResponse(HttpStatusCode.NotFound);
                }

                return Request.CreateResponse(HttpStatusCode.OK, tblcustomerbooking);
            }
            else
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest);
            }
        }