public bool AddResponse(GuestResponse guestResponse)
        {
            //Set result to false
            bool result = false;

            //Check if email already used
            GuestResponse dbResponse = _dbContext.GuestResponses.FirstOrDefault(x => x.Email == guestResponse.Email);
            if (dbResponse != null)
            {
                //if guestResponse is the same the return wil be false 
                if (dbResponse.WillAttend != guestResponse.WillAttend)
                {
                    dbResponse.WillAttend = guestResponse.WillAttend;

                    //Tell EF that state is modified
                    _dbContext.Entry(dbResponse).State = EntityState.Modified;

                    result = true;
                }
            }
            else
            {
                _dbContext.GuestResponses.Add(guestResponse);
                result = true;
            }
            _dbContext.SaveChanges();

            return result;
        }
 public ViewResult Rsvp(GuestResponse response, HttpPostedFileBase image = null)
 {
     if (ModelState.IsValid)
     {
         if (image != null)
         {
             response.ImageMimeType = image.ContentType;
             response.ImageData = new byte[image.ContentLength];
             image.InputStream.Read(response.ImageData, 0, image.ContentLength);
         }
         _repository.AddResponse(response);
         return View("Thanks", response);
     }
     else
     {
         return View();
     }
 }