学步园

StringBuilder strb1 = new StringBuilder();

            DataSet ds = new DataSet();
            BLL.JZ_BJFL BllBJFL = new BLL.JZ_BJFL();
            ds = BllBJFL.GetList("SSID=0");
            //父分类
            strb1.Append("<table style=\"width: 50%;text-align:left;\" border=\"1\">");
            foreach (DataRow dr in ds.Tables[0].Rows)
            {
                strb1.Append("<tr><td>"+dr["FLMC"].ToString()+"</td></tr>");//大类,第一行start end

                DataSet ds2 = new DataSet();
                BLL.JZ_BJFL BllBjfl = new BLL.JZ_BJFL();
                ds2=BllBjfl.GetList("SSID="+dr["ID"].ToString());
                strb1.Append("<tr><td>");                                   //小类，第二行，start

                //小类列表开始
                strb1.Append("<table border=\"1\" style=\"width:100%;\">");
                for (int i = 0; i <= ds2.Tables[0].Rows.Count - 1; i++)
                {
                    if (i % 4 == 0)
                    {
                        strb1.Append("<tr><td>");
                    }
                    strb1.Append("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href=\"cmp_ServicePriceAdd1.aspx?BjflId=" + ds2.Tables[0].Rows[i]["ID"].ToString() + "\" >" + ds2.Tables[0].Rows[i]["FLMC"].ToString() + "</a>");
                    if ((i+1) % 4 == 0)
                    {
                        strb1.Append("</td></tr>");
                    }
                }
                if (ds2.Tables[0].Rows.Count % 4 != 0)
                {
                    strb1.Append("</td></tr>");
                }
                strb1.Append("</table>");
                //小类列表结束

                strb1.Append("</td></tr>");                                 //小类，第二行，end
            }
            strb1.Append("</table>");

            lblTable.Text = strb1.ToString();