XmlTextWriter & MemoryStream

private byte[] GenerateXXXXXML()
        {
            byte[] distBytes = new byte[1];

            using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
            {
                XmlTextWriter xtw = new XmlTextWriter(ms, Encoding.UTF8);
                xtw.Formatting = Formatting.Indented;
                xtw.WriteProcessingInstruction("xml", "version='1.0' encoding='utf-8'");
                xtw.WriteStartElement("PRODValidation");
                xtw.WriteAttributeString("xmlns", "http://www.XXX.com/PRODUCT/validate");
                
                // charge type
                xtw.WriteStartElement("Query");
                xtw.WriteAttributeString("name", "TABLENAME");
                xtw.WriteStartElement("Parameters");
                xtw.WriteStartElement("Param");
                xtw.WriteAttributeString("name", "");
                xtw.WriteAttributeString("value", "");
                xtw.WriteEndElement();
                xtw.WriteEndElement();
                xtw.WriteStartElement("Result");
                xtw.WriteStartElement("Status");
                xtw.WriteEndElement();
                xtw.WriteStartElement("AdditionalInfo");
                xtw.WriteEndElement();
                xtw.WriteEndElement();
                xtw.WriteEndElement();

                xtw.WriteEndElement();
                xtw.Flush();
                ms.Flush();
                distBytes = ms.ToArray();
                xtw.Close();
            }

            return distBytes;
        }