To bind the TreeView control to XML data, I have taken the XmlDataSource in which I have define an Xpath and a DataFile.

Here is my sample code:

<asp:XmlDataSource ID="PageDataSource" runat="server" XPath="/PageTitle" DataFile="~/App_Data/PageTitle.xml" />
<asp:TreeView ID="PageTreeView" runat="server" DataSourceID=" PageDataSource ">
 <DataBindings>
 <asp:TreeNodeBinding DataMember="Id" TextField="#InnerText" />
 <asp:TreeNodeBinding DataMember="Tite" TextField="#InnerText" />
 <asp:TreeNodeBinding DataMember="PageUrl" TextField="#InnerText" />
 </DataBindings>
</asp:TreeView>

In the page load simply write:

protected void Page_Load(object sender, EventArgs e)
{
 PageDataSource.XPath = "/PageTitle";
 PageTreeView.DataBind();
}

Lastly, here is the XML file:

<?xml version="1.0" encoding="UTF-8"?>

<PageTitle>

<Page>

<Id>1</Id>

<Tite>This is my testing</Tite>

<PageUrl>mybook /1/1.aspx</PageUrl>

</Page>

<Page>

<Id>2</Id>

<Tite>This is my testing</Tite>

<PageUrl> mybook /2/2.aspx</PageUrl>

</Page>
</PageTitle>