private static void OnContentTemplateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ContentPresenter p = d as ContentPresenter;
if (p != null)
{
string resource = e.NewValue as string;
if (resource == null)
{
p.ContentTemplate = null;
}
else
{
p.ContentTemplate = p.TryFindResource(resource) as DataTemplate;
}
}
}
