ADO.NET hierarchical data from database

i dont know why but i am unable to draw parentchild relations with this code in IE

_
Public Function ReceiveDataSet(ByVal CategoryID As String) As DataSet
Try
'Get the data from database and put it in the DataSet
Dim nwindConn As OleDbConnection = New OleDbConnection("Provider=MSDataShape;Data Provider=SQLOLEDB;" & _
"Data Source=.;Integrated Security=SSPI;Initial Catalog=northwind; user id=sa; password=123")
Dim custDA As OleDbDataAdapter = New OleDbDataAdapter("SHAPE {SELECT CategoryID, CategoryName FROM Categories where categoryID=" & CategoryID & "} " & _
" APPEND ({SELECT * FROM Products} AS Products " & _
" RELATE CategoryID TO CategoryID)", nwindConn)
Dim custDS As DataSet = New DataSet
custDA.Fill(custDS, "Categories")
Return custDS
Catch ex As Exception
HttpContext.Current.Response.Write(ex.ToString)
End Try