static void CreateXML(string outputPath)

        {

            XmlDocument _xmlDoc = new XmlDocument();

            string _xmlNode = @"<books type='ITP' language='english'><metadata></metadata></books>";

            _xmlDoc.LoadXml(_xmlNode);

            XmlDeclaration _xmlDeclar = _xmlDoc.CreateXmlDeclaration("1.0", "UTF-8", "no");

            XmlElement _root = _xmlDoc.DocumentElement;

            _xmlDoc.InsertBefore(_xmlDeclar, _root);

            if (!string.IsNullOrWhiteSpace(outputPath))

            {

                _xmlDoc.Save(outputPath);

            }

        }

<?xml version="1.0" encoding="utf-8" standalone="no"?>

<books type="ITP" language="english">

<metadata>

</metadata>

</books>