protected void Page_Load(object sender, EventArgs e) { str = Request.QueryString["SecondName"]; SecondClassDm secondclassdm = new SecondClassDm(); secondclassdm.SecondClassDmName = str; ThirdClassDm thirdclassdm = new ThirdClassDm(); this.DataList1.DataSource = SecondClassDm.FcShowContent(thirdclassdm, secondclassdm); this.DataList1.DataBind(); GA gAdmin = new GA(); Good lGood = new Good(); lGood.SecondClassDmID = gAdmin.ScNameGetID(secondclassdm); List <Good> lGoodList = new List <Good>(); lGoodList = Good.ScIDGetGoodID(lGood); List <ImgInfo> lImgInfo = new List <ImgInfo>(); datalist_good.DataSource = ImgInfo.GoodIDGetImgInfo(lGoodList); datalist_good.DataBind(); }