How to write Newlines in XmlDocument

[C# Programming]

I'm trying to write a XmlDocument like so:


XmlDocument doc = new XmlDocument();

// Xml is added

StreamWriter s = new StreamWriter("output.xml");

XmlTextWriter w = new XmlTextWriter(s);


doc.WriteContentTo (w);

w.Flush();

s.Flush();
s.WriteLine();
s.Close();


But it writes all the xml on one line. How do I make it put each node on its own line?