Promote XElement to attribute

gistfile1.cs

private static void PromoteElementToAttribute(XElement element, string xname)
{
    var names = element.Descendants(xname).ToArray();
    foreach(var name in names)
    {
        if (name != null && name.Parent != null)
        {
            name.Parent.SetAttributeValue(xname, name.Value);
            name.Remove();
        }
    }
}