public void ProcessRequest(HttpContext context)
        {
            int pageIndex = 1, pageSize = 10;
            string orderStr = string.Empty;

            string subIds = context.Request.QueryString["subIds"];

            string logIds = context.Request.QueryString["logIds"];
            string refIds = context.Request.QueryString["refIds"];

            if (!string.IsNullOrEmpty(context.Request.QueryString["pagenum"]))
                int.TryParse(context.Request.QueryString["pagenum"], out pageIndex);
            pageIndex++;
            if (!string.IsNullOrEmpty(context.Request.QueryString["pagesize"]))
                int.TryParse(context.Request.QueryString["pagesize"], out pageSize);

            if (!string.IsNullOrEmpty(context.Request.QueryString["sortdatafield"]) && !string.IsNullOrEmpty(context.Request.QueryString["sortorder"]))
            {
                string sortDataField = context.Request.QueryString["sortdatafield"].Trim();
                string sortOrder = context.Request.QueryString["sortorder"].Trim();

                switch (sortDataField)
                {
                    case "RefNo":
                        sortDataField = "sn.RefNo";
                        break;
                    case "StatusName":
                        sortDataField = "ss.StatusName";
                        break;
                    case "OwnCorpName":
                        sortDataField = "ownCorp.CorpName";
                        break;
                    case "AssetName":
                        sortDataField = "ass.AssetName";
                        break;
                    case "BrandName":
                        sortDataField = "bra.BrandName ";
                        break;
                    case "NetAmount":
                        sortDataField = "sl.NetAmount";
                        break;
                    case "MUName":
                        sortDataField = "mu.MUName";
                        break;
                }
                orderStr = string.Format("{0} {1}", sortDataField, sortOrder);
            }

            NFMT.Common.UserModel user = Utility.UserUtility.CurrentUser;
            NFMT.WareHouse.BLL.StockLogBLL bll = new NFMT.WareHouse.BLL.StockLogBLL();
            NFMT.Common.SelectModel select = bll.GetLogsBySubIdsSelect(pageIndex, pageSize, orderStr, subIds, logIds, refIds);

            NFMT.Common.ResultModel result = bll.Load(user, select);

            context.Response.ContentType = "text/plain";
            if (result.ResultStatus != 0)
            {
                context.Response.Write(result.Message);
                context.Response.End();
            }

            int totalRows = result.AffectCount;
            System.Data.DataTable dt = result.ReturnValue as System.Data.DataTable;

            Dictionary<string, object> dic = new Dictionary<string, object>();
            dic.Add("count", totalRows);
            dic.Add("data", dt);

            string postData = Newtonsoft.Json.JsonConvert.SerializeObject(dic, new Newtonsoft.Json.Converters.DataTableConverter());

            context.Response.Write(postData);
        }