C# http请求

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

namespace Common
{
    public class HttpHelper
    {
        public static string Post(string url, string jsonParams, string jsonParamsName) 
        {
            System.Net.WebRequest request = System.Net.WebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            string paraUrlCoded = System.Web.HttpUtility.UrlEncode(jsonParamsName);
            paraUrlCoded += "=" + System.Web.HttpUtility.UrlEncode(jsonParams);
            byte[] byteArray = Encoding.UTF8.GetBytes(paraUrlCoded);
            request.ContentLength = byteArray.Length;
            Stream requestStream;
            try
            {
                requestStream = request.GetRequestStream();
            }
            catch (Exception)
            {
                requestStream = null;
                Console.Write("连接服务器失败!");
            }
            requestStream.Write(byteArray, 0, byteArray.Length);
            requestStream.Close();

            System.Net.WebResponse response;
            try
            {
                response = request.GetResponse();
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
            //Console.WriteLine(((System.Net.HttpWebResponse)response).StatusDescription);
            Stream responseStream = response.GetResponseStream();
            System.IO.StreamReader reader = new System.IO.StreamReader(responseStream);
            string responseFromServer = reader.ReadToEnd();
            reader.Close();
            requestStream.Close();
            response.Close();
            return responseFromServer;
        }
    }
}

string testUrl = "http://XXXXXX/HandlerRequest.aspx";
            var temp = new { Status = "Pass", UserName= "test" };
            string jsonString = Newtonsoft.Json.JsonConvert.SerializeObject(temp);
            Common.HttpHelper.Post(testUrl, jsonString, "paramaters");

using XXX;
using Newtonsoft.Json.Linq;

namespace XXXX
{
    public partial class HandlerRequest : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            JObject pobj = JObject.Parse(Request.Form["paramaters"]);
            var Status = pobj["Status "];
            var UserName = apply["UserName "];
            //dosomething
            Response.StatusDescription = "123";
            Response.Write("123456");
            Response.End();
        }
    }
}                

相关资料：http://www.cnblogs.com/kuangwu/p/3275584.html