private void Properties_Executed(object sender, ExecutedRoutedEventArgs e)
{
var window = new SettingsWindow();
window.Owner = this;
window.WindowStartupLocation = WindowStartupLocation.CenterOwner;
bool? result = window.ShowDialog();
if (result.GetValueOrDefault(false))
{
// User pressed save, so we should re-init things.
_viewModel.SettingsChanged();
}
}