Setting WebBrowser DocumentText fails silently sometimes.

Hi all, I'm currently trying to modify a xhtml document that is being displayed by the new WebBrowser control in .Net 2.0.
Loading the page using the Navigate method works fine, but if I read the document text, modify it inside a XmlDocument and then set the DocumentText from the XmlDocuemt OuterText, it is a roll of the dice as to whether it will be set.

This brings up two issues:
1. The assignment doesn’t seem to stick :-)
2. There is no indication that the assignment has failed.

I can't seem to find an InvalidHtml event, and no exception is being thrown.

Any help would be greatly appreciated.

The failing  code sample is displayed below.< xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

try

System.Xml.XmlDocument xdoc = new System.Xml.XmlDocument();

xdoc.LoadXml(this.webBrowser.DocumentText);

System.Xml.XmlNodeList nl = xdoc.SelectNodes("/html/body/object");

foreach (System.Xml.XmlNode n in nl)

System.Console.WriteLine(n.ToString());

XmlAttribute objWidth = n.Attributes["width"];

XmlAttribute objHeight = n.Attributes["height"];

if (objWidth != null)

objWidth.Value = this.Width.ToString();

if (objHeight != null)

objHeight.Value = this.Height.ToString();

this.webBrowser.DocumentText = xdoc.OuterXml;

}catch(System.Exception ex){

System.Console.WriteLine(ex.Message);