ช่วยดู datalist error ให้หน่อย ครับ มันหา คอลั่มไม่เจอ ( codeแบ่งหน้า) web-asp.net

private void ItemsGet()
        {
            string requ = Request.QueryString["Brand_name"];

            string strconn = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();
            SqlConnection conn = new SqlConnection(strconn);

            SqlDataAdapter da = new SqlDataAdapter("select * from products WHERE Brand_name =" + requ, conn);
            DataSet ds = new DataSet();
            da.Fill(ds, "products");


            PagedDataSource objPds = new PagedDataSource();
            objPds.DataSource = ds.Tables["products"].DefaultView;
            objPds.AllowPaging = true;
            objPds.PageSize = 9;
            objPds.CurrentPageIndex = CurrentPage;

            lblCurrentPage.Text = "Page: " + (CurrentPage + 1).ToString() + " of " + objPds.PageCount.ToString();

            cmdPrev.Enabled = !objPds.IsFirstPage;
            cmdNext.Enabled = !objPds.IsLastPage;


            DataList1.DataSourceID = null;
            DataList1.DataSource = objPds;
            DataList1.DataBind();

            dlProduct.DataSourceID = null;
            dlProduct.DataSource = objPds;
            dlProduct.DataBind();

            DataList2.DataSourceID = null;
            DataList2.DataSource = objPds;
            DataList2.DataBind();

        }