Printing and updating the inner text of a xml node in vb.net

Hi guys this is the code for printing and updating the inner text of node in a xml file through vb.net code which i used update my xml file name as content.xml
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content.xml
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<?xml version="1.0" encoding="utf-8"?>
<main>
  <node1 id="1">my old text</node1>
</main>


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This function is to print inner text of a xml node

Public Function shw()

Dim strxmlpath As String = Server.MapPath("content.xml")
            Dim doc As New XmlDocument
            doc.Load(strxmlpath)
            Dim elem As XmlNode = doc.DocumentElement.FirstChild
Response.Write(elem.InnerText)
             doc.Save(strxmlpath)

End Function

This function is to update inner text of a xml file

Public Function updt()
 Dim strxmlpath As String = Server.MapPath("content.xml")
            Dim doc As New XmlDocument
            doc.Load(strxmlpath)
            Dim node As XmlNode = doc.DocumentElement.FirstChild
            node.InnerText = " enter your new text"


            doc.Save(strxmlpath)
End Function