Use VB2005 With Windows CE 5.0 With SQL Server 2005 Compact Edition With XML Error

I am using VB2005 , Windows CE 5.0 , SQL server 2005 compact edition

and using XML reader, but it will show the empty SQLCeException ,

why does it occur?



The source it show at the follow :

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Imports System.Data.SqlServerCe
Imports System.Xml

Public Class Form1



Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim DBPath As String

Dim mydr As XmlTextReader = New XmlTextReader(m_sXMLFileName)
mydr.WhitespaceHandling = WhitespaceHandling.None

While mydr.Read()
' Look for the <configuration> section
' This lets us add several peices in the config file
If mydr.Name = "DBPath" Then
DBPath = mydr.Name
End If
End While
mydr.Close()

Me.MobileDataTableAdapter.Connection.ConnectionString = "Data Source =""Program FilesCEdatabaseMobileDatabase.sdf"";"
Try
If MobileDatabaseDataSetUtil.DesignerUtil.IsRunTime Then
'TODO: Delete this line of code to remove the default AutoFill for 'MobileDatabaseDataSet.MobileData'.
Me.MobileDataTableAdapter.Fill(Me.MobileDatabaseDataSet.MobileData)
End If

Catch ex As SqlCeException
MessageBox.Show(ex.Message)
End Try
End Sub

End Class