/// <summary>
        /// Handles the event for user tapping on the login button
        /// </summary>
        /// <param name="sender">
        /// Sender object
        /// </param>
        /// <param name="e">
        /// Event args
        /// </param>
        private void LoginButtonClick(object sender, RoutedEventArgs e)
        {
            SessionStorage.Remove();

            FacebookSessionClient fb = new FacebookSessionClient(AppId);

            fb.LoginWithApp("basic_info,publish_actions,read_stream", "custom_state_string");
        }
 /// <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;
 }