private void backstage_IsOpenChanged(object sender, DependencyPropertyChangedEventArgs e) {
if (((Boolean)e.NewValue)) {
this._ShellListView.IsFocusAllowed = false;
backstage.Focus();
} else {
this._ShellListView.IsFocusAllowed = true;
}
this.autoUpdater.Visibility = Visibility.Visible;
autoUpdater.UpdateLayout();
if (KeepBackstageOpen) {
backstage.IsOpen = true;
KeepBackstageOpen = false;
}
}