public ActionResult GetProductNumber(string classfiy, string series, string brand) { var classfiyID = product_ClassfiyBLL.GetModel(p => p.分类名称 == classfiy).ID; //分类ID(沙发、床。。。) var seriesID = product_SeriesBLL.GetModel(p => p.系列 == series).ID; //系列ID(时光,绽放。。) var brandID = product_BrandBLL.GetModel(p => p.品牌名称 == brand).ID; //品牌ID(CHIC CASA,CHIC HOME,CHIC ALIVAR。。) SelectList productSelectListItems; try { var producCodetID = productCodeBLL.GetModel(p => p.分类ID == classfiyID && p.品牌ID == brandID && p.系列ID == seriesID).ID; //型号ID var productList = productBLL.GetModels(p => p.型号ID == producCodetID).ToList(); //商品集合 productSelectListItems = new SelectList(productList, "编号", "编号"); } catch (Exception) { return(Json("null")); } return(Json(productSelectListItems)); }