DataTable 查询时间

            DataTable dtOrderTime = OrderLogCollection.Create().ChildrensByTable("ReleationId = " + orderId + " and Status in (2,4)", string.Empty, 0, 0, out erMsg);


            if (dtOrderTime == null && dtOrderTime.Rows.Count <= 0)
            {
                _context.Response.Write(AjaxMethod.BuildReturnMsg(0, SitePublicFunction.BuildReturnMsg(20002)));    //无效的订单号


                return;
            }


            DataRow[] fr = dtOrderTime.Select("Status=2");
            string payedTime = fr.Length > 0 ? fr[0]["DateTime"].ToString() : "";


            fr = dtOrderTime.Select("Status=4");
            string sendTime = fr.Length > 0 ? fr[0]["DateTime"].ToString() : "";


            string orderTime = "{PayedTime:\"" + payedTime + "\",SendTime:\"" + sendTime + "\"}";