Adding child nodes using c# Xdocument class

Question

I have an xml file as given below.

Answer 1

    Document.Root.Element("Characters").Add(new XElement("Character", new XAttribute("ID", "File0"), new XElement("Value", "value0"), new XElement("Description")),
        new XElement("Character", new XAttribute("ID", "File1"), new XElement("Value", "value1"), new XElement("Description")));

Note: I have not included the namespace for brevity. You have to add those.