public static void SubscribeInformation(STATIONNAME StationName, DEVICENAME DeviceName, dynamic FieldName, String SessionID, Object CallBackObject) { StationHandler SiteInformation = KeeperData.FirstOrDefault(Item => Item.StationName == StationName); if (SiteInformation != null) { SiteInformation.SubscribeInformation(DeviceName, FieldName, SessionID, CallBackObject); } }