using System;

using System.Xml;

using System.Xml.Linq;

​

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        XElement _response = new XElement("response",

            new XAttribute("type", "amenities"));

​

        for (int i = 0; i < 10; i++)

        {

            _response.Add(new XElement("amenities",

                new XAttribute("id", i.ToString()),

                new XElement("amenity_id", i.ToString()),

                new XElement("amenity", "amenity name" + i),

                new XElement("heading", "heading value - " + i),

                new XElement("response", "response text - " + i),

                new XElement("type", "type - " + i),

                new XElement("tab", "tab - " + i)

                ));

        }

        //XElement _response = XElement.Parse("<root></root>"); // load your response here

        string[] vvvv = new string[] { "5", "6", "8", "9" };

        var _matched = _response.Descendants("amenities").Where(x => vvvv.Contains<string>(x.Element("amenity_id").Value));

        foreach (var item in _matched)

        {

            Console.WriteLine("VALUE: " + item.Element("response").Value);

        }

        // your xml

        Console.WriteLine("--------------------------------------------");

        Console.WriteLine(_response.ToString());

    }

}