private void choosePhotoBtn_Click(object sender, RoutedEventArgs e)
        {
            realPhotoPathName = ChoosePhotoHelper.getFilenameFromUserChoose();
            Button choosePhotoPBtn = (Button)sender;
            Image  photo           = (Image)FindName("photo");

            choosePhotoPBtn.Visibility = System.Windows.Visibility.Collapsed;
            photo.Visibility           = System.Windows.Visibility.Visible;
            if (!realPhotoPathName.Equals(""))
            {
                photo.Source = ChoosePhotoHelper.getRealPhoto(realPhotoPathName);
            }
        }
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            string photopath = (string)value;

            return(ChoosePhotoHelper.getRealPhoto(photopath));
        }