static JobPage()
 {
     SystemNavigationManager.GetForCurrentView().BackRequested += (s, e) =>
     {
         ApplicationDataContainer localSettings = ApplicationData.Current.LocalSettings;
         localSettings.Values.Remove(Settings.JOBNAME);
         localSettings.Values.Remove(Settings.JOBCRON);
         using (var context = new TaskSchedulerDbContext())
         {
             Func <Models.Action, bool> predicate = x => x.JobId == null;
             context.Actions.RemoveRange(context.ActionsForActionPredicate(predicate));
             context.UriActions.RemoveRange(context.UriActionsForActionPredicate(predicate));
             context.NotificationActions.RemoveRange(context.NotificationActionsForActionPredicate(predicate));
             context.ApplicationActions.RemoveRange(context.ApplicationActionsForActionPredicate(predicate));
             context.SaveChanges();
         }
     };
 }
        private void AppBarButton_Delete(object sender, RoutedEventArgs e)
        {
            if ((int)localSettings.Values[Settings.JOBACTION] == Settings.Actions.CREATE)
            {
                return;
            }

            using (var context = new TaskSchedulerDbContext())
            {
                Job job = context.Jobs.Where(x => x.Id == (int)localSettings.Values[Settings.JOBID]).First();
                context.Actions.RemoveRange(context.ActionsForActionPredicate(predicate));
                context.UriActions.RemoveRange(context.UriActionsForActionPredicate(predicate));
                context.NotificationActions.RemoveRange(context.NotificationActionsForActionPredicate(predicate));
                context.ApplicationActions.RemoveRange(context.ApplicationActionsForActionPredicate(predicate));
                context.Jobs.Remove(job);
                context.SaveChanges();
            }
            Frame.GoBack();
        }