fluent

 private static void Get()
        {
            var ms = new MemoryStream();

            var request = new FluentHttpRequest()
                .BaseUrl("https://graph.facebook.com")
                .ResourcePath("/prabirshrestha")
                .Method("GET")
                .QueryStrings(qs =>
                              qs
                                  .Add("fields", "id,name")
                                  .Add("format", "json"))
                .Headers(h => h.Add("User-Agent", "Fluent Http"))
                .OnResponseHeadersReceived((o, e) => { e.ResponseSaveStream = ms; });

            var ar = request.BeginExecute(null, null);
            var response = request.EndExecute(ar);

            ms.Seek(0, SeekOrigin.Begin);
            Console.WriteLine(new StreamReader(ms).ReadToEnd());
        }

        private static void Post()
        {
            var ms = new MemoryStream();

            var request = new FluentHttpRequest()
                .BaseUrl("https://graph.facebook.com")
                .ResourcePath("/me/feed")
                .Method("POST")
                .QueryStrings(qs =>
                              qs
                                  .Add("format", "json"))
                .Headers(h => h
                    .Add("User-Agent", "Fluent Http")
                    .Add("Content-Type", "application/x-www-form-urlencoded"))
                .Body(body =>
                      body
                          .Append("message=hello"))
                .AuthenticateUsing(new OAuth2AuthorizationRequestHeaderAuthenticator(AccessToken))
                .OnResponseHeadersReceived((o, e) => e.ResponseSaveStream = ms);

            var ar = request.BeginExecute(null, null);
            var response = request.EndExecute(ar);

            ms.Seek(0, SeekOrigin.Begin);
            Console.WriteLine(new StreamReader(ms).ReadToEnd());
        }