public ActionResult Letter(int?id) { var letterModel = new LetterModel(); if (id != null) { var acceptMessage = _iMessageServices.GetAcceptMessageById(id.Value); letterModel.Message = _iMessageServices.GetMessageByMessageCode(acceptMessage.MessageCode); acceptMessage.IsRead = true; _iMessageServices.Update(acceptMessage); letterModel.MessageAcceptUserItem = acceptMessage; } letterModel.User = _iUserServices.GetUser().Result; GetMessage(); return(View(letterModel)); }