SPNavigation.TopNavigationBar Property
Gets an SPNavigationNodeCollection object that contains the nodes in the top link bar for the website.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
Property Value
Type: Microsoft.SharePoint.Navigation.SPNavigationNodeCollectionReturns a collection of SPNavigationNode objects that represent the top link bar. If the top link bar is inherited by the current website, this property returns null.