using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;
class Program
{
 static void Main()
 {
 XElement summary = new XElement("summary",
 new XText("An XAttribute is "), new XElement("bold", "not"),
 new XText(" an XNode")
 );
 
 Console.WriteLine(summary);
 }
}
The output:
An XAttribute is not an XNode