What's the easiest way to remove all attributes from a XML in C#?

foreach (XmlElement el in nodes.SelectNodes(".//*")) {
   el.Attributes.RemoveAll();
}

static void removeAllAttributes(XDocument doc)
{
    foreach (var des in doc.Descendants())
        des.RemoveAttributes();
}

Usage:

var doc = XDocument.Load(path); //Or .Parse("xml");
removeAllAttributes(doc);

string res = doc.ToString();