对TreeView动态添加的节点如何进行站点导航或者添加超链接

TreeView控件只有一个根节点，Page打开时在 TreeNodePopulate事件中添加了若干层子节点，
如何对其进行站点导航 或者在点击节点时建立超链接？protected void TreeView_TreeNodePopulate(object sender, TreeNodeEventArgs e)
    {
        if (e.Node.ChildNodes.Count == 0)
        {
            switch (e.Node.Depth)
            {
                case 0:
                    PopulateBureau(e.Node);
                    break;
                case 1:
                     PopulateStation(e.Node);
                    break;
                case 2:
                     PopulateAmmeter(e.Node);
                     break;
            }
           
        }
    }PopulateBureau(),PopulateStation(),PopulateAmmeter()为三个填充节点的函数
望高手赐教！