The SiteMapProvider and StaticSiteMapProvider classes support the concept of a site map provider hierarchy, where a site map provider can have a hierarchical relationship with other site map providers.

• SiteMapProvider和StaticSiteMapProvider类支持站点地图提供程序层次结构的概念,其中一个站点地图提供程序可以与其他站点地图提供程序具有层次关系。