Generate XML with multiple namespaces using XDocument

Question

I have XML like this:

Answer 1

you can add the namespace like

 XElement root = new XElement("{http://www.adventure-works.com}Root",
    new XAttribute(XNamespace.Xmlns + "aw", "http://www.adventure-works.com"),
    new XElement("{http://www.adventure-works.com}Child", "child content")
);

This example produces the following output:

    
  child content