private static void OnceLoaded(object sender, RoutedEventArgs e)
{
var element = sender as FrameworkElement;
var condition = FrameworkElementService.GetUnLoadedCondition(element);
if (condition.Condition())
{
condition.Action();
element.Loaded -= OnceLoaded;
element.ClearValue(FrameworkElementService.UnLoadedConditionProperty);
}
}
