// POST api/events
 public HttpResponseMessage Post(Event anEvent)
 {
     if (ModelState.IsValid)
     {
         _db.Add<Event>(anEvent);
         try
         {
             _db.SaveChanges();
             HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, anEvent);
             response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = anEvent.Id }));
             return response;
         }
         catch (DbUpdateException)
         {
             return Request.CreateResponse(HttpStatusCode.InternalServerError);
         }
     }
     else
     {
         return Request.CreateResponse(HttpStatusCode.BadRequest);
     }
 }
 // PUT api/events/5
 public HttpResponseMessage Put(int id, Event anEvent)
 {
     if (ModelState.IsValid && id == anEvent.Id)
     {
         try
         {
             _db.Attach<Event>(anEvent);
             _db.SaveChanges();
             return Request.CreateResponse(HttpStatusCode.OK, anEvent);
         }
         catch (DbUpdateConcurrencyException)
         {
             return Request.CreateResponse(HttpStatusCode.Conflict);
         }
     }
     else
     {
         return Request.CreateResponse(HttpStatusCode.BadRequest);
     }
 }