using System;
using System.IO;
using System.Linq;
using System.Xml.Linq;
using System.Collections;
using System.Collections.Generic;
public class MainClass{
public static void Main(){
XDocument srcTree = new XDocument(
new XComment("This is a comment"),
new XElement("Root",
new XElement("Child1", "data1"),
new XElement("Child2", "data2"),
new XElement("Child3", "data3")
)
);
XDocument doc = new XDocument(
new XDeclaration("1.0", "utf-8", "yes"),
new XComment("This is a new comment"),
new XElement("Root",
from el in srcTree.Element("Root").Elements()
where ((string)el).StartsWith("data")
select el
)
);
doc.Save("Test.xml");
Console.WriteLine(File.ReadAllText("Test.xml"));
}
}