private void SaveStyleSheet_Click(object sender, RadRoutedEventArgs e) { SaveFileDialog sfd = new SaveFileDialog(); sfd.Filter = "Xaml Files|*.xaml"; if (sfd.ShowDialog() == true) { using (var stream = sfd.OpenFile()) { Stylesheet stylesheet = new Stylesheet(); stylesheet.ExtractStylesheetFromDocument(this.editor.Document); XamlFormatProvider.SaveStylesheet(stylesheet, stream); } } }