private void SwitchToggleGradesNotification_Toggled(object sender, RoutedEventArgs e) { ToggleSwitch toggleSwitch = (ToggleSwitch)sender; if (toggleSwitch.IsOn) { BackgroundTaskHelper.RegisterBackgroundTask("GradesBackgroundTask", "BackgroundTasks.GradesBackgroundTask", 60); } else { BackgroundTaskHelper.UnregisterBackgroundTask("GradesBackgroundTask"); } }