SessionWebService.cs

using System;
using System.IO;
using System.Net;
using IowaCodeCamp.library.service;

namespace IowaCodeCamp.library.webservice
{
    public class SessionWebService
    {
        private readonly SessionService service;

        public SessionWebService(SessionService service)
        {
            this.service = service;
        }

        public void GetListOfSessions()
        {
            var request = (HttpWebRequest)WebRequest.Create("http://iowacodecamp.com/data/json");
            request.Method = "GET";

            request.BeginGetResponse(new AsyncCallback(GetResponse), request);
        }

        private void GetResponse(IAsyncResult asyncResult)
        {
            var json = ReadResponse(asyncResult);

            service.CallBackWithListOfSessions(json);
        }

        private string ReadResponse(IAsyncResult result)
        {
            var request = (HttpWebRequest)result.AsyncState;
            var responseFromServer = "";

            try
            {
                var response = request.EndGetResponse(result);
                var dataStream = response.GetResponseStream();
                var reader = new StreamReader(dataStream);
                responseFromServer = reader.ReadToEnd();
                reader.Close();
                dataStream.Close();
                response.Close();
            }
            catch (WebException e)
            {
            }

            return responseFromServer;
        }
    }
}