Как сериализовать XDocument, созданный используя LINQ2XML, в файл ?

static void Main(string[] args)
{
    XNamespace empNM = "urn:lst-emp:emp";

    XDocument xDoc = new XDocument(
            new XDeclaration("1.0", "UTF-16", null),
             new XElement("Employees",
                    new XElement("Employee",
                        new XComment("DevCurry.com Employees"),
                        new XElement("EmpId", "1"),
                        new XElement("Name", "Kathy"),
                        new XElement("Sex", "Female")
                    )));

        using (StringWriter strW = new StringWriter())
        {
            using (XmlWriter xmlW = XmlWriter.Create(strW))
            {
                xDoc.Save(xmlW);
                // Save to Disk
                xDoc.Save("C:\\XDocSerialized.xml");
                Console.WriteLine("Saved");
            }
        }   

    Console.ReadLine();
}