XPathDocument xdoc = new XPathDocument(@"c:\temp\myfile.xml");

        XPathNavigator nav = xdoc.CreateNavigator();

        XPathNodeIterator nodes = (XPathNodeIterator)nav.Evaluate("//namespace::*");

        Hashtable h = new Hashtable();

        while(nodes.MoveNext())

        {

            h[nodes.Current.Name] = nodes.Current.Value;

        }

        foreach(string name in h.Keys)

        {

            WL("{0}:{1}",name,h[name]);

        }