public HttpResponseBase SaveOne()
 {
     string jsonStr = String.Empty;
     try
     {
         PromoAdditionalPrice model = new PromoAdditionalPrice();
         _promoadditionproceMgr = new PromoAdditionalPriceMgr(mySqlConnectionString);
         if (!String.IsNullOrEmpty(Request.Params["rowid"]))
         {
         }
         else
         {
             model.event_name = Request.Params["name"].ToString();
             model.event_desc = Request.Params["desc"].ToString();
             model.event_type = Request.Params["event"].ToString();
             model.kuser = (System.Web.HttpContext.Current.Session["caller"] as Caller).user_id.ToString();
             model.created = DateTime.Now;
             model.muser = model.kuser;
             model.modified = model.created;
             model.id = _promoadditionproceMgr.InsertFirst(model); // _promopairMgr.Save(model);
             model = _promoadditionproceMgr.GetModel(model.id);  //_promopairMgr.Select(query);
             string event_id = GetEventId(model.event_type, model.id.ToString());
             if (model.id > 0)
             {
                 jsonStr = "{success:true,\"id\":\"" + model.id + "\",\"cateID\":\"" + model.category_id + "\",\"event_id\":\"" + event_id + "\",\"cateOne\":\"" + model.left_category_id + "\",\"cateTwo\":\"" + model.right_category_id + "\" }";
             }
             else
             {
                 jsonStr = "{success:false}";
             }
         }
     }
     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);
         jsonStr = "{success:false}";
     }
     this.Response.Clear();
     this.Response.Write(jsonStr.ToString());
     this.Response.End();
     return this.Response;
 }