public override SiteMapNode FindSiteMapNodeFromKey (string key)
{
SiteMapNode node = base.FindSiteMapNodeFromKey (key);
if (node != null)
return node;
foreach (SiteMapProvider smp in ChildProviders) {
node = smp.FindSiteMapNodeFromKey (key);
if (node != null)
return node;
}
return null;
}