页面报错string fromat error解决方法以及思路

while (cmd_tpmommabw01_group.Read())
        {
            Log::Trace("", __FUNCTION__, "********开始读取数据[{0}]", "");
            tpmommabw01.Reset();
            /*tpmommabw01.APP_STATUS = cmd_tpmommabw01_group.GetString(1);
            tpmommabw01.ST_NO = cmd_tpmommabw01_group.GetString(2);
            tpmommabw01.ORDER_NO = cmd_tpmommabw01_group.GetString(3);
            tpmommabw01.INGOT_CODE = cmd_tpmommabw01_group.GetString(4);
            tpmommabw01.PREC_PONO = cmd_tpmommabw01_group.GetString(5);
            tpmommabw01.FACTORY_DIV = cmd_tpmommabw01_group.GetString(6);
            total_mat_wt = cmd_tpmommabw01_group.GetDecimal(7);
            total_mat_num = cmd_tpmommabw01_group.GetDecimal(8);*/

            tpmommabw01.APP_STATUS = cmd_tpmommabw01_group.GetString(1);
            tpmommabw01.ST_NO = cmd_tpmommabw01_group.GetString(2);
            tpmommabw01.LG_ST = cmd_tpmommabw01_group.GetString(3);
            tpmommabw01.ORDER_NO = cmd_tpmommabw01_group.GetString(4);
            tpmommabw01.INGOT_CODE = cmd_tpmommabw01_group.GetString(5);
            tpmommabw01.PREC_PONO = cmd_tpmommabw01_group.GetString(6);
            tpmommabw01.FACTORY_DIV = cmd_tpmommabw01_group.GetString(7);
            total_mat_wt = cmd_tpmommabw01_group.GetDecimal(8);
            total_mat_num = cmd_tpmommabw01_group.GetDecimal(9);
            Log::Trace("", __FUNCTION__, "tpmommabw01.APP_STATUS[{0}]", tpmommabw01.APP_STATUS);
            Log::Trace("", __FUNCTION__, "tpmommabw01.ST_NO[{0}]", tpmommabw01.ST_NO);
            Log::Trace("", __FUNCTION__, "tpmommabw01.LG_ST[{0}]", tpmommabw01.LG_ST);
            Log::Trace("", __FUNCTION__, "tpmommabw01.ORDER_NO[{0}]", tpmommabw01.ORDER_NO);
            Log::Trace("", __FUNCTION__, "tpmommabw01.INGOT_CODE[{0}]", tpmommabw01.INGOT_CODE);
            Log::Trace("", __FUNCTION__, "tpmommabw01.PREC_PONO[{0}]", tpmommabw01.PREC_PONO);
            Log::Trace("", __FUNCTION__, "tpmommabw01.FACTORY_DIV[{0}]", tpmommabw01.FACTORY_DIV);
            Log::Trace("", __FUNCTION__, "total_mat_wt[{0}]", total_mat_wt);
            Log::Trace("", __FUNCTION__, "total_mat_num[{0}]", total_mat_num);
            CString sql_tpmommabw01_inq = "select * "
                " from tpmommabw01"
                " where app_status = @app_status "
                " and st_no = @st_no "
                "and lg_st=@lg_st"
                " and order_no = @order_no "
                " and ingot_code = @ingot_code "
                " and prec_pono = @prec_pono "
                " and factory_div = @factory_div "
                " order by mat_no ";
            Log::Trace("", __FUNCTION__, "********sql_tpmommabw01_inq[{0}]", sql_tpmommabw01_inq);
            CDbCommand cmd_tpmommabw01_inq(sql_tpmommabw01_inq, conn);
            cmd_tpmommabw01_inq.Parameters.Set("app_status", tpmommabw01.APP_STATUS);
            cmd_tpmommabw01_inq.Parameters.Set("st_no", tpmommabw01.ST_NO);
            //cmd_tpmommabw01_inq.Parameters.Set("lg_st", v_lg_st);
            cmd_tpmommabw01_inq.Parameters.Set("lg_st", tpmommabw01.LG_ST);
            cmd_tpmommabw01_inq.Parameters.Set("order_no", tpmommabw01.ORDER_NO);
            cmd_tpmommabw01_inq.Parameters.Set("ingot_code", tpmommabw01.INGOT_CODE);
            cmd_tpmommabw01_inq.Parameters.Set("prec_pono", tpmommabw01.PREC_PONO);
            cmd_tpmommabw01_inq.Parameters.Set("factory_div", tpmommabw01.FACTORY_DIV);
            cmd_tpmommabw01_inq.ExecuteReader();
            if (cmd_tpmommabw01_inq.Read())
            {
                Log::Trace("", __FUNCTION__, "********读取cmd_tpmommabw01_inq数据[{0}]", "");
                cmd_tpmommabw01_inq.Fetch(tpmommabw01);

                CDataRow& row = bcls_ret->Tables[0].Rows.Add();
                row.Merge(tpmommabw01);

                if (!bcls_ret->Tables[0].Columns.Contains("TOTAL_WT"))
                {
                    bcls_ret->Tables[0].Columns.Add(DT_DECIMAL, "TOTAL_WT");
                }
                if (!bcls_ret->Tables[0].Columns.Contains("TOTAL_NUM"))
                {
                    bcls_ret->Tables[0].Columns.Add(DT_DECIMAL, "TOTAL_NUM");
                }
                if (!bcls_ret->Tables[0].Columns.Contains("CAST_NUM"))
                {
                    bcls_ret->Tables[0].Columns.Add(DT_DECIMAL, "CAST_NUM");
                }
                row["TOTAL_WT"] = total_mat_wt;
                row["TOTAL_NUM"] = total_mat_num;
                row["CAST_NUM"] = total_mat_num;

                v_total_count++;
                Log::Trace("", __FUNCTION__, "********结束读取cmd_tpmommabw01_inq数据[{0}]", "");
            }
            Log::Trace("", __FUNCTION__, "********结束读取数据[{0}]", "");
            cmd_tpmommabw01_inq.Close();

        }
        cmd_tpmommabw01_group.Close();


        //返回的记录数。
        fetchRowCount = v_total_count;

//读取字段顺序，代码中注释的读取不对

app_status
,st_no,
lg_st,
order_no
ingot_code
,prec_pono
,factory_div,
sum(mat_wt),
sum(mat_num)
,prec_melt_lot_no