XmlDsigExcC14NTransform

Hi I am trying to find hash value based on part of a xml documnet.

here is my code:

        Dim myDoc As New XmlDocument
        Dim fileNAme As String
        fileNAme = Server.MapPath("Test.xml")
        myDoc.Load(fileNAme)

        Dim Forms_Xpath As String = "//Employee"

        Dim nav As System.Xml.XPath.XPathNavigator = myDoc.CreateNavigator()
        Dim nodeList As XmlNodeList
        nodeList = myDoc.SelectNodes(Forms_Xpath)

        Dim myC14NT As New XmlDsigExcC14NTransform
        myC14NT.LoadInput(nodeList)

        Dim MessageStream As Stream
        MessageStream = myC14NT.GetOutput(GetType(Stream))

        Dim HashValue() As Byte
        Dim SHhash As New SHA1Managed
        HashValue = SHhash.ComputeHash(MessageStream)
        Dim strHASH As String
        strHASH = Convert.ToBase64String(HashValue2, 0, HashValue2.Length)
        Label1.Text = strHASH
-------------------

it is generating a wrong value. here is my xml file:

<Employees>
   <Employee ID="1">
      <FirstName>Klaus</FirstName>
      <LastName>Salchner</LastName>
      <PhoneNumber>410-727-5112</PhoneNumber>
      <EmailAddress>klaus_salchner@hotmail.com</EmailAddress>
      <WebAddress>http://www.enterprise-minds.com</WebAddress>
      <JobTitle>Sr. Enterprise Architect</JobTitle>
   </Employee>
   <Employee ID="2">
      <FirstName>Peter</FirstName>
      <LastName>Pan</LastName>
      <PhoneNumber>604-111-1111</PhoneNumber>
      <EmailAddress>peter.pan@fiction.com</EmailAddress>
      <JobTitle>Sr. Developer</JobTitle>
   </Employee>
</Employees>

I think it is canonicalizing only <Employee></Employee> node, not the content of the entire employee node.

Any suggestions will be helpful.

thanks-hari