C# Post資料流到HTTP地址

最經典的就是下面這段Post資料流到HTTP地址上，然後獲得返回的響應。            //把sXmlMessage發送到指定的DsmpUrl地址上
            Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
            byte[] arrB = encode.GetBytes(sXmlMessage);
            HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(DsmpUrl);
            myReq.Method = "POST" ;
            myReq.ContentType = "application/x-www-form-urlencoded";
            myReq.ContentLength = arrB.Length;
            Stream outStream = myReq.GetRequestStream();            
            outStream.Write(arrB,0,arrB.Length);
            outStream.Close();


            //接收HTTP做出的響應
            WebResponse myResp = myReq.GetResponse();
            Stream ReceiveStream = myResp.GetResponseStream();                
            StreamReader readStream = new StreamReader( ReceiveStream, encode );
            Char[] read = new Char[256];
            int count = readStream.Read( read, 0, 256 );
            string str = null;
            while (count > 0) 
            {
                str += new String(read, 0, count);
                count = readStream.Read(read, 0, 256);
            } 
            readStream.Close();
            myResp.Close();

 看很簡單的幾句就可以完成HTTP的發送和接收。當然如果你使用soap協議採用Webservice那麼原理也相同，只不過是HTTP+XML的方式。
sr:http://www.cnblogs.com/qdwolf/archive/2004/08/13/33119.aspx