public string GetProductKeyJson(string inputJsonStr)
 {
     job = gm.getJsonResult(inputJsonStr);
     try
     {
         string bigItem    = job["BigItem"].ToString();
         string smallItem  = job["SmallItem"].ToString();
         string value      = job["Value"].ToString();
         string orderPrice = job["Price"].ToString();
         string orderHot   = job["Hot"].ToString();
         return(main.GetProductKey(bigItem, smallItem, value, orderPrice, orderHot));
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.Message);
         return(gm.getStageJson(false, msg.noData_cht));
     }
 }