private static void OnExpandedItemChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
Accordian shelf = sender as Accordian;
if (shelf != null)
{
shelf.OnExpandedItemChanged(e.OldValue, e.NewValue);
}
}
protected virtual void OnExpanded()
{
Accordian parentAccordian = this.ParentAccordian;
if (parentAccordian != null)
{
parentAccordian.ExpandedItem = this;
}
RaiseEvent(new RoutedEventArgs(ExpandedEvent, this));
}