XML file fails to process correctly

    Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
        Try
            Dim m_xmld As XmlDocument
            Dim m_nodelist As XmlNodeList
            Dim m_node As XmlElement
            'Create the XML Document
            m_xmld = New XmlDocument()
            'Load the Xml file
            m_xmld.Load("C:\Users\public\Documents\sample2.xml")

            'Get the list of name nodes 
            m_nodelist = m_xmld.SelectNodes("File/CDRs/Call")
            'Loop through the nodes


            MsgBox(m_nodelist.Count)
        Catch errorVariable As Exception
            'Error trapping
            Console.Write(errorVariable.ToString())
            Console.ReadLine()
        End Try

    End Sub