internal static void ShortenUrlExecute(ExecutedRoutedEventArgs e)
{
var tb = (TextBox)e.Parameter;
tb.Text = UrlShortenerService.Shorten(tb.Text);
}
void ShortenUrls_Executed(object sender, ExecutedRoutedEventArgs e)
{
StatusTextBox.Text = UrlShortenerService.Shorten(StatusTextBox.Text);
}