public static class XDocumentExtensions { /// <summary> /// Saves the contents of an XDocument object to an XmlDocument object /// </summary> /// <param name="xDocument">Source document</param> /// <returns>Destination document</returns> public static XmlDocument GetXmlDocument(this XDocument xDocument) { XmlDocument xmlDocument = new XmlDocument(); xmlDocument.Load(xDocument.... return xmlDocument; } }...