private void ShowAboutDialog()
 {
     _logger.Debug("Show about dialgo");
     var dialog = new DialogWindow("About", new AboutUserControl());
     dialog.Show();
 }
 private void ManageUsers()
 {
     _logger.Debug("Manage users called.");
     var dialog = new DialogWindow("Manage Users", new ManageUsersUserControl());
     dialog.Show();
 }