using System;

using System.Xml;

public class Program

{

    public static void Main()

    {

        string str = @"<root><Item id='first'><name>test</name></Item><Item id='second'><name>test2</name></Item></root>";

        XmlDocument doc = new XmlDocument();

        doc.LoadXml(str);

        XmlNode node = doc.SelectSingleNode("//root/Item[@id='first' and name='test']");

        Console.WriteLine(node.OuterXml);

        Console.WriteLine("Hello World");

    }

}