[译]为大型网站用ASP.NET2.0生成一个动态的网站地图

public class SiteMapDataProvider : StaticSiteMapProvider
{
private SiteMapNode mRootNode = null;

...

// create the root node
public override void Initialize(string name,
        NameValueCollection attributes)
{
     base.Initialize(name, attributes);
     mRootNode = new SiteMapNode(this, "Home",
                 "Default.aspx", "Home");
     AddNode(mRootNode);
}

public override SiteMapNode FindSiteMapNode(string rawUrl)
{
     return base.FindSiteMapNode(rawUrl);
}

// stack a node under the root
public SiteMapNode Stack(string title, string uri)
{
     return Stack(title, uri, mRootNode);
}

// stack a node under any other node
public SiteMapNode Stack(string title, string uri,
                    SiteMapNode parentnode)
{
     lock (this)
     {
         SiteMapNode node = base.FindSiteMapNodeFromKey(uri);

         if (node == null)
         {
             node = new SiteMapNode(this, uri, uri, title);
             node.ParentNode =
               ((parentnode == null) ? mRootNode : parentnode);
             AddNode(node);
         }
         else if (node.Title != title)
         {             // support renaming documents
             node.Title = title;
         }
  
         return node;
     }
}
}