public static void DeleteDailyAnnouncement()
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);


            config.AppSettings.Settings["AnnMess"].Value     = "";
            config.AppSettings.Settings["AnnTime"].Value     = "";
            config.AppSettings.Settings["AnnLoops"].Value    = "";
            config.AppSettings.Settings["AnnInterval"].Value = "";
            config.Save(ConfigurationSaveMode.Modified);
            ConfManager.RefreshSection("appSettings");
            SchedulerService.DeleteAllTimersForEveryday();
        }
 public static void DeleteToday()
 {
     SchedulerService.DeleteAllTimersForToday();
 }