Get Json Result From WebService using C#

               var client = new RestClient();
                client.EndPoint = @"URL";
                client.Method = HttpVerb.POST;
                client.PostData = "{postData: value}";
                var json = client.MakeRequest();
                XmlDocument xmlData = JsonToXML(json);--Json To XML

------------------------------------------------------------------
public XmlDocument JsonToXML(string json)
        {
            XmlDocument doc = new XmlDocument();

            using (var reader = JsonReaderWriterFactory.CreateJsonReader(Encoding.UTF8.GetBytes(json), XmlDictionaryReaderQuotas.Max))
            {
                XElement xml = XElement.Load(reader);
                doc.LoadXml(xml.ToString());
            }

            return doc;
        }
--------------------------------------------CLASS Rest Client------------------------------------------
using System;
using System.IO;
using System.Net;
using System.Text;

public enum HttpVerb
{
    GET,
    POST,
    PUT,
    DELETE
}

namespace HttpUtils
{
    public class RestClient
    {
        public string EndPoint { get; set; }
        public HttpVerb Method { get; set; }
        public string ContentType { get; set; }
        public string PostData { get; set; }

        public RestClient()
        {
            EndPoint = "";
            Method = HttpVerb.GET;
            ContentType = "text/xml";
            PostData = "";
        }
        public RestClient(string endpoint)
        {
            EndPoint = endpoint;
            Method = HttpVerb.GET;
            ContentType = "text/xml";
            PostData = "";
        }
        public RestClient(string endpoint, HttpVerb method)
        {
            EndPoint = endpoint;
            Method = method;
            ContentType = "text/xml";
            PostData = "";
        }

        public RestClient(string endpoint, HttpVerb method, string postData)
        {
            EndPoint = endpoint;
            Method = method;
            ContentType = "text/xml";
            PostData = postData;
        }


        public string MakeRequest()
        {
            return MakeRequest("");
        }

        public string MakeRequest(string parameters)
        {
            var request = (HttpWebRequest)WebRequest.Create(EndPoint + parameters);

            request.Method = Method.ToString();
            request.ContentLength = 0;
            request.ContentType = ContentType;

            if (!string.IsNullOrEmpty(PostData) && Method == HttpVerb.POST)
            {
                var encoding = new UTF8Encoding();
                var bytes = Encoding.GetEncoding("iso-8859-1").GetBytes(PostData);
                request.ContentLength = bytes.Length;

                using (var writeStream = request.GetRequestStream())
                {
                    writeStream.Write(bytes, 0, bytes.Length);
                }
            }

            using (var response = (HttpWebResponse)request.GetResponse())
            {
                var responseValue = string.Empty;

                if (response.StatusCode != HttpStatusCode.OK)
                {
                    var message = String.Format("Request failed. Received HTTP {0}", response.StatusCode);
                    throw new ApplicationException(message);
                }

                // grab the response
                using (var responseStream = response.GetResponseStream())
                {
                    if (responseStream != null)
                        using (var reader = new StreamReader(responseStream))
                        {
                            responseValue = reader.ReadToEnd();
                        }
                }

                return responseValue;
            }
        }

    } // class

}