HttpWebRequest和HttpWebResponse实例

string reqestMsg = "Tom";
string responseMsg = string.Empty;
byte[] buffer = Encoding.UTF8.GetBytes(reqestMsg);

try
{
　　　　　　//把请求地址换成博客园的 如http://www.cnblogs.com 就返回了整个页面数据　　
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:6603/WebServer.aspx");
request.Method = "POST";
request.ContentLength = buffer.Length;

using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(buffer, 0, buffer.Length);
}

HttpWebResponse resonse = (HttpWebResponse)request.GetResponse();
Stream responseStream = resonse.GetResponseStream();

using (StreamReader sr = new StreamReader(responseStream))
{
responseMsg = sr.ReadToEnd();
}

resonse.Close();
}
catch (Exception ex)
{
responseMsg = ex.Message;
}

Response.Write(responseMsg);

string responseMsg = "NO MSG";

if (Request.InputStream != null)
{
byte[] buffer = new byte[Request.InputStream.Length];
Request.InputStream.Read(buffer, 0, buffer.Length);
string msg = Encoding.UTF8.GetString(buffer);
msg = msg.Replace("+", "%2B").Replace(" ", "%20");
responseMsg = SayHello(msg);
}

Response.Write(responseMsg);