.net/C# HttpWebRequest传送与接收参数

 public string PostData(string url, string data)//url：要发送到网站的地址   data：传送需要的参数
 {
 HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url);
 myRequest.Method = "POST";
 myRequest.ContentType = "application/x-www-form-urlencoded";
 myRequest.ContentLength = data.Length;
 Stream newStream = myRequest.GetRequestStream();
 // Send the data.
 ASCIIEncoding encoding = new ASCIIEncoding();
 byte[] postdata = encoding.GetBytes(data);
 newStream.Write(postdata, , data.Length);
 newStream.Close();
 // Get response
 HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
 StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.GetEncoding("gb2312"));
 string content = reader.ReadToEnd();//得到结果   

 return content; 

GET方法：

  Uri uri = new Uri(url + "?" + postData);
             System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(uri);
             request.Method = "GET";
             request.ContentType = "application/x-www-form-urlencoded";
             request.AllowAutoRedirect = false;
             request.Timeout = ;
             System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
             Stream responseStream = response.GetResponseStream();
             StreamReader readStream = new StreamReader(responseStream, System.Text.Encoding.UTF8);
             string retext = readStream.ReadToEnd().ToString();
             readStream.Close();
             return retext;  

 }