The SiteMapDataSource control obtains navigation data from a site map. This data includes information about the pages in your Web site, such as the URL, title, description, and location in the navigation hierarchy. Storing your navigation data in one place makes it easier to add and remove items in the navigational menus of your Web site.
In earlier versions of ASP and ASP.NET, when you added a page to your Web site and then added a link to that new page from every other page in the Web site, you had to add the links manually, include a common file, or develop custom navigation functionality. ASP.NET versionВ 2.0 includes navigation controls that make it easier for you to create, customize, and maintain navigational menus.
TasksHow to: Display Site-Map Data in Non-hierarchical Web Server Controls
How to: Add Simple Site Navigation
How to: Filter the Nodes Retrieved by SiteMapDataSource Web Server Controls
ConceptsASP.NET Site Navigation Overview
Securing ASP.NET Site Navigation
Securing Data Access