Add SPNavigation Heading programmatically

If you want to add header without link to SharePoint Navigation pro-grammatically,  Need to set some values in the NavigationNode.Properties HashTable.

SPNavigationNode node, node1;             // Get the parent’s top link bar.             SPNavigationNodeCollection topnav = web.Navigation.TopNavigationBar;             // Create the node.             node = new SPNavigationNode("News", "/news", true);             topnav.AddAsLast(node);             node = new SPNavigationNode("Services", string.Empty, true);             node = topnav.AddAsLast(node);             node.MakeHeaderNode();             node1 = new SPNavigationNode("IT Support", "/Services/Lists/Helpdesk Initiation/NewForm.aspx?RootFolder=&source=/", true);             node.Children.AddAsLast(node1); public static class SPNavigationNodeExtensions {     public static void MakeHeaderNode(this SPNavigationNode node)     {         node.Properties["BlankUrl"] = "True";         node.Properties["LastModifiedDate"] = DateTime.Now;         node.Properties["Target"] = "";         node.Properties["vti_navsequencechild"] = "true";         node.Properties["UrlQueryString"] = "";         node.Properties["CreatedDate"] = DateTime.Now;         node.Properties["Description"] = "";         node.Properties["UrlFragment"] = "";         node.Properties["NodeType"] = "Heading";         node.Properties["Audience"] = "";         node.Update();     } }

As you can see, the “BlankUrl'” = True, and NodeType = “Heading”.