Auto Binding a TreeView control from a self referencing table

Imports System
Imports System.Data
Imports System.Data.SqlClient

Partial Class DataBind
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            'Opens a connection to Database
            Dim oConn As New SqlConnection(ConfigurationManager.ConnectionStrings("ConnectionString").ToString())
            oConn.Open()

            'Create Adapter and Fill Dataset
            Dim oAdapter As New SqlDataAdapter("SELECT * FROM SelfReferenceTable", oConn)
            Dim oDs As New DataSet
            oAdapter.Fill(oDs)

            'Close Connection
            oConn.Dispose()
            oConn = Nothing

            'Close Adapter
            oAdapter.Dispose()
            oAdapter = Nothing

            TestCtrl.DataFieldID = "ID"
            TestCtrl.DataFieldParentID = "ParentID"
            TestCtrl.DataTextField = "Text"
            TestCtrl.DataSource = oDs
            TestCtrl.DataBind()
        End If
    End Sub
End Class