public ActionResult Save(Broadcast model) { model.UpdateTime = DateTime.Now; var entry = BroadcastService.Get(c => c.Email.Equals(model.Email)); bool b; if (entry is null) { b = BroadcastService.AddEntitySaved(model) != null; } else { entry.Email = model.Email; entry.SubscribeType = model.SubscribeType; entry.UpdateTime = DateTime.Now; b = BroadcastService.SaveChanges() > 0; } return(ResultData(model, b, b ? "更新订阅成功!" : "更新订阅失败!")); }