using System;
using System.Linq;
using System.Xml.Linq;
using System.Collections;
using System.Collections.Generic;
public class MainClass{
public static void Main(){
XElement xmlTree1 = new XElement("Root",
new XElement("Child1", 1),
new XElement("Child6", 6)
);
XElement xmlTree2 = new XElement("Root",
from el in xmlTree1.Elements()
where((int)el >= 3 && (int)el <= 5)
select el
);
Console.WriteLine(xmlTree2);
}
}