public string[] getAlertDashboardOneSettings() // convert to json { string[] jsonArray; List <DashboardOneAlertSettings> alertSettings; try { alertSettings = _stockScreenerService.GetAlertSettings(); jsonArray = new string[alertSettings.Count]; } catch (Exception ex) { if (ex is System.ArgumentNullException) { Console.WriteLine("Exception " + ex); } Console.WriteLine("Exception " + ex); return(null); } for (int i = 0; i < alertSettings.Count; i++) { jsonArray[i] = JsonSerializer.Serialize(alertSettings[i]); } return(jsonArray); }