.NETを使用してTwitterとKwippyに投稿する：簡単なC#ガイド

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO; 
using System.Net; 
using System.Web;
 
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            System.Net.ServicePointManager.Expect100Continue = false;
            Uri address = new Uri("http://twitter.com/statuses/update.json");
            
            // Webリクエストを作成
            HttpWebRequest request = WebRequest.Create(address) as HttpWebRequest;
            request.Method = "POST"; 
            request.ContentType = "application/x-www-form-urlencoded";
            request.Credentials = new NetworkCredential("username", "password");
            
            StringBuilder data = new StringBuilder(); 
            data.Append("status=from%20.net");
            
            // 送信したいデータのバイト配列を作成
            byte[] byteData = UTF8Encoding.UTF8.GetBytes(data.ToString()); 
            
            // リクエストヘッダーにコンテンツ長を設定
            request.ContentLength = byteData.Length;
            
            using (Stream postStream = request.GetRequestStream()) 
            { 
                postStream.Write(byteData, 0, byteData.Length); 
            } 
            
            using (HttpWebResponse response = request.GetResponse() as HttpWebResponse) 
            { 
                // レスポンスストリームを取得
                StreamReader reader = new StreamReader(response.GetResponseStream());
                
                // コンソールアプリケーションの出力
                Console.WriteLine(reader.ReadToEnd()); 
            }
        }
    }
}