SqlConnection con = new SqlConnection(CommonERP.sqlConStr);

            //连接

            con.Open();

            //实例化事务

            SqlTransaction myst = con.BeginTransaction();

            try

            {

                //保存主表数据

                int mainResult = DAL.po_purchaseOrder.addPurchaseOrder(myst, obj);

                if (mainResult <= 0)

                {

                    myst.Rollback();

                    con.Close();

                }

                //循环保存子表数据

                for (int i = 0; i < rowAdd.Length; i++)

                {

                    //项次加1

                    string no = "0" + (maxNo += 1).ToString();

                    //构造正确项次

                    no = no.Substring(no.Length - 2);

                    //项次赋值

                    rowAdd[i]["poOrderItemNo"] = no;

                    int itemResult = DAL.po_purchaseOrder.addItem(myst, rowAdd[i], obj.PoOrderNo);