private void EditButton_Click(object sender, System.Windows.RoutedEventArgs e)
 {
     var dialog = new WpfEditDefaultLicenseHeaderDialog (_page);
       dialog.ShowDialog();
 }
        private void EditButton_Click(object sender, System.Windows.RoutedEventArgs e)
        {
            var dialog = new WpfEditDefaultLicenseHeaderDialog(_page);

            dialog.ShowDialog();
        }