public static string updateNotificationText() { var listMinor_id = ApplicationData.IBeaconData.Where(s => s.IsShowOnMap()).ToList(); string minor = ""; string major = ""; string uuid = ""; foreach (IBeaconData i in listMinor_id) { minor = minor + "," + i.minor_id; major = major + "," + i.major_id; uuid = uuid + "," + i.uuid; } string notificationText = GetLocaleText(LocaleType.DetectNotification); Override.SetText(notificationText); Override.LoadMinor_id(minor); Override.LoadMajor_id(major); Override.LoadUUID(uuid); return(""); }