private void OkBtn_Click(object sender, RoutedEventArgs e)
 {
     Hide();
     OnFiltering?.Invoke(FilterTabTitle, FilterExchange, FilterUnderlying, FilterContract, FilterPortfolio);
     Save();
 }
 private void OkBtn_Click(object sender, RoutedEventArgs e)
 {
     Hide();
     OnFiltering?.Invoke(TradeExchange, TradeUnderlying, TradeContract);
 }