c# xslt Transform

http://support.microsoft.com/kb/307322

public string TransformXml(object data, string xslFileName)
{

    XmlSerializer xs = new XmlSerializer(data.GetType());
    string xmlString;
    using (StringWriter swr = new StringWriter())
    {
        xs.Serialize(swr, data);
        xmlString = swr.ToString();
    }

    var xd = new XmlDocument();
    xd.LoadXml(xmlString);

    var xslt = new System.Xml.Xsl.XslCompiledTransform();
    xslt.Load(xslFileName);
    var stm = new MemoryStream();
    xslt.Transform(xd, null, stm);
    stm.Position = 1;
    var sr = new StreamReader(stm);
    xtr.Close();
    return sr.ReadToEnd();
}