private void tg_highlightStrategy_SelectionChanged(object sender, SelectionChangedEventArgs e) { foreach (var item in tg_Area.VertexList) { HighlightBehaviour.SetHighlightStrategy(item.Value, (HighlightStrategy)tg_highlightStrategy.SelectedItem); } foreach (var item in tg_Area.EdgesList) { HighlightBehaviour.SetHighlightStrategy(item.Value, (HighlightStrategy)tg_highlightStrategy.SelectedItem); } }