public ActionResult Create(City city)
        {
            if (ModelState.IsValid)
            {
                db.Cities.Add(city);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(city);
        }
        // POST api/Service
        public HttpResponseMessage PostCity(City city)
        {
            if (ModelState.IsValid)
            {
                db.Cities.Add(city);
                db.SaveChanges();

                HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, city);
                response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = city.Id }));
                return response;
            }
            else
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
            }
        }
        // PUT api/Service/5
        public HttpResponseMessage PutCity(int id, City city)
        {
            if (!ModelState.IsValid)
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
            }

            if (id != city.Id)
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest);
            }

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

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException ex)
            {
                return Request.CreateErrorResponse(HttpStatusCode.NotFound, ex);
            }

            return Request.CreateResponse(HttpStatusCode.OK);
        }
 public ActionResult Edit(City city)
 {
     if (ModelState.IsValid)
     {
         db.Entry(city).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(city);
 }