public IActionResult SaveDetail(string item, string price, string val) { Response resp = new Response(); if (string.IsNullOrEmpty(item) || string.IsNullOrEmpty(price)) { resp.Code = -1; resp.Content = new ArgumentNullException().Message; return(Json(resp)); } user = new UserHelper((ClaimsIdentity)User.Identity); OrderDetail detail = new OrderDetail(); detail.Price = int.Parse(price); detail.Item = item; detail.UserId = new Guid(EncryptHelper.DecryptString(user.GetUserId())); detail.UserName = user.GetUserName(); detail.OrderId = new Guid(EncryptHelper.DecryptString(val)); orderDetailOperation.Create(detail); resp.Code = 1; return(Json(resp)); }