XDocument.Save (TextWriter) serialize this XDocument to a TextWriter.
Imports System Imports System.Text Imports System.IO Imports System.Xml Imports System.Xml.XPath Public Class MainClass Public Shared Sub Main() Dim sb As StringBuilder = New StringBuilder() Dim doc As XDocument = _ <?xml version="1.0" encoding="utf-8"?> <Root><Child>content</Child></Root> Dim tr As TextWriter = New StringWriter(sb) doc.Save(tr) Console.WriteLine(sb.ToString()) End Sub End Class