public HttpResponseBase GetProdName()
        {
            string json = string.Empty;
            try
            {
                _prodMgr = new ProductMgr(mySqlConnectionString);
                int isTranUint = 0;

                int pid = 0;
                int cid = 0;
                int bid = 0;
                if (!string.IsNullOrEmpty(Request.Params["product_id"]) && int.TryParse(Request.Params["product_id"], out isTranUint))
                {
                    pid = Convert.ToInt32(Request.Params["product_id"]);
                }
                if (!string.IsNullOrEmpty(Request.Params["class_id"]) && int.TryParse(Request.Params["class_id"], out isTranUint))
                {
                    cid = Convert.ToInt32(Request.Params["class_id"]);
                }
                if (!string.IsNullOrEmpty(Request.Params["brand_id"]) && int.TryParse(Request.Params["brand_id"], out isTranUint))
                {
                    bid = Convert.ToInt32(Request.Params["brand_id"]);
                }
                string prodName = _prodMgr.GetNameForID(pid, cid, bid);
                if (!string.IsNullOrEmpty(prodName))
                {
                    json = "{success:true,\"prod_name\":\"" + prodName + "\"}";//返回json數據
                }
                else
                {
                    json = "{success:false,\"prod_name\":\"\"}";//返回json數據
                }



            }
            catch (Exception ex)
            {
                Log4NetCustom.LogMessage logMessage = new Log4NetCustom.LogMessage();
                logMessage.Content = string.Format("TargetSite:{0},Source:{1},Message:{2}", ex.TargetSite.Name, ex.Source, ex.Message);
                logMessage.MethodName = System.Reflection.MethodBase.GetCurrentMethod().Name;
                log.Error(logMessage);
                json = "{success:false,\"prod_name\":\"\"}";
            }
            this.Response.Clear();
            this.Response.Write(json);
            this.Response.End();
            return this.Response;

        }