Default Namespaces in XDocument

Trying to create a google news site map using XDocument yesterday and I ran into a little problem working with a default namespace as well as additional explicitly named namespaces.

i.e <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9">

To save you guys the time and effort here is some advice - you need to declare the default namespace in the root element name declaration and add additional namespaces as Attributes to this element.

See below snippet of code:

XNamespace sitemap = XNamespace.Get("http://www.sitemaps.org/schemas/sitemap/0.9"); 

XNamespace news = XNamespace.Get("http://www.google.com/schemas/sitemap-news/0.9");  

XDocument newsSitemapDoc = new XDocument(new XDeclaration("1.0", "UTF-8", null),                 

new XElement(sitemap + "urlset",

new XAttribute(XNamespace.Xmlns + "news", news.NamespaceName)));