Using Site Navigation Controls
The ASP.NET controls segment of the Toolbox panel contains a group named Navigation, which contains three types of site navigation controls—Menu, SiteMapPath, and TreeView. All these controls draw their navigational information from an XML file named Web.sitemap, which is saved in the root of your site.
Menu is a Dynamic HTML type of menu control that you might already be familiar with. When you point to a link that has child pages below it, a secondary menu appears.
TreeView is a control that organizes items hierarchically—similar to what you see when browsing a site such as msdn.microsoft.com. It is appropriate for organizing very large sites that have many levels of hierarchical information.
SiteMapPath provides ...