Sorting all the elements in a XDocument

Question

I have a XDocument where I\'d like to sort all of the elements alphabetically. Here\'s a simplified version of the structure:

Answer 1

I think these extension method work best.

public static class XmlLinq
{
  public static void Sort(this XElement source, bool sortAttributes = true)
  {
     if (source == null)
        throw new ArgumentNullException("source");

     if (sortAttributes)
        source.SortAttributes();

     List sortedChildren = source.Elements().OrderBy(e => e.Name.ToString()).ToList();
     source.RemoveNodes();

     sortedChildren.ForEach(c => source.Add(c));
     sortedChildren.ForEach(c => c.Sort());
  }

  public static void SortAttributes(this XElement source)
  {
     if (source == null)
        throw new ArgumentNullException("source");

     List sortedAttributes = source.Attributes().OrderBy(a => a.ToString()).ToList();
     sortedAttributes.ForEach(a => a.Remove());
     sortedAttributes.ForEach(a => source.Add(a));
  }
}