public ActionResult AddSignProduct(SignProductModel model) { PartProductInfo partProductInfo = AdminProducts.AdminGetPartProductById(model.Pid); if (partProductInfo == null) { ModelState.AddModelError("Pid", "请选择商品"); } if (AdminProducts.IsExistSignProduct(model.Sign, model.Pid)) { ModelState.AddModelError("Pid", "此商品已经存在"); } if (ModelState.IsValid) { AdminProducts.AddSignProduct(model.Sign, model.Pid); AddAdminOperateLog("添加签名商品", "添加签名商品,签名商品为:" + partProductInfo.Name); return(PromptView("签名商品添加成功")); } return(View(model)); }