public string GetProductColumnJson(string inputJsonStr)
 {
     job = gm.getJsonResult(inputJsonStr);
     try
     {
         string column = job["Column"].ToString();
         string value  = job["Value"].ToString();
         if (!column.Equals("") && !value.Equals(""))
         {
             return(main.GetProductColumn(column, value));
         }
         else
         {
             return(gm.getStageJson(false, msg.dataError_cht));
         }
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.Message);
         return(gm.getStageJson(false, msg.noData_cht));
     }
 }