In ASP.Net 2.0 TreeView Navigation control allows you to display a hierarchical menu. The TreeView’s menu items can be populated either XML datasource or it can populate it from database.

In Visual Studio 2005, you can create a TreeView by simply dragging control from Toolbox to the Web page. In your HTML source page you will see the below code

<asp:TreeView ID="TreeView1" Runat="server">
</asp:TreeView>