/// <summary>
 /// Logouts the click.
 /// </summary>
 /// <param name="sender">
 /// The sender.
 /// </param>
 /// <param name="e">
 /// The <see cref="RoutedEventArgs"/> instance containing the event data.
 /// </param>
 private void LogoutClick(object sender, RoutedEventArgs e)
 {
     SessionStorage.Remove();
     this.CurrentUser = null;
 }