C# http

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;

namespace MyWed
{
    class HtmlHelper
    {
        private static CookieContainer s_cc = new CookieContainer();

        public static string GetHtml(string strUrl/*, string strResponse*/)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
            request.Method = "GET";
            request.CookieContainer = s_cc;
            request.MediaType = "application/json";

            HttpWebResponse response = (HttpWebResponse) request.GetResponse();
            Stream responseStream = response.GetResponseStream();
            StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);
            string strResponse = streamReader.ReadToEnd();


            streamReader.Close();
            responseStream.Close();

            return strResponse;
        }

        public static string PostHtml(string strUrl, string strPostData)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
            request.Method = "POST";
            request.CookieContainer = s_cc;
            request.MediaType = "application/json";

            byte[] bytePostData = Encoding.Default.GetBytes(strPostData);
            request.ContentLength = bytePostData.Length;
            using (Stream stream = request.GetRequestStream())
            {
                stream.Write(bytePostData, 0, bytePostData.Length);
            }

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream responseStream = response.GetResponseStream();
            StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);
            string strResponse = streamReader.ReadToEnd();


            streamReader.Close();
            responseStream.Close();

            return strResponse;
        }

    }

    class Program
    {
        static void Main(string[] args)
        {
        }
    }
}