LINQ to XML编程之编程基础

1              XDocument myDocument = new XDocument(
2                 new XDeclaration("1.0", "utf-8", "yes"),
3                 new XElement("Root", "stuff")
4                 );
5             string str = myDocument.Declaration + Environment.NewLine + myDocument;
6             Console.WriteLine(str);        

  XDocument riders = new XDocument
                (new XDeclaration("1.0", "utf-8", "yes"),
                new XComment("Riders for the year 2007"),
                new XElement("Riders",
                    new XElement("Rider",
                    new XElement("Name", "Rich Carmichael"),
                    new XElement("Class", "450"),
                    new XElement("Brand", "Suzuki"),
                    new XElement("Sponsers", new XElement("Name", "Makita"))
                    ),
                    new XElement("Rider",
                        new XElement("Name", "Chad Red"),
                        new XElement("Class", "450"),
                        new XElement("Brand", "Yamaha"),
                        new XElement("Sponsers", new XElement("Name", "ProTaper"))
                        ),
                        new XElement("Rider",
                            new XElement("Name", "James Stewart"),
                            new XElement("Class", "450"),
                            new XElement("Brand", "Kawasaki"),
                            new XElement("Sponsers", new XElement("Name", "Renthai"))
                            )
                    )
                );

   riders.Save(@"C:\Users\Administrator\Desktop\Riders.xml");

XElement Riders = XElement.Load(@"C:\Users\Administrator\Desktop\Riders.xml");

 　　　　　　　　var tree = new XElement("Root",
                new XElement("Manager", "Deva"),
                new XElement("BirthDay", "01/01/1970"),
                from element in riders.Elements()
                select element
                );