void expander_Click(object sender, RoutedEventArgs e)
{
if (expand_state) log.WriteInteractionLog(23, "object_type: " + _object_type + "; object_id: " + _object_id.ToString(), ((TouchEventArgs)e).TouchDevice);
else log.WriteInteractionLog(22, "object_type: " + _object_type + "; object_id: " + _object_id.ToString(), ((TouchEventArgs)e).TouchDevice);
ToggleCommentsSection();
}