C#发送GET与POST请求

////////HTTPGET

 

          HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
          request.Method = "GET";
          request.ContentType = "text/html;charset=UTF-8";
          HttpWebResponse response = (HttpWebResponse)request.GetResponse();
          Stream myResponseStream = response.GetResponseStream();
          StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.UTF8);
          string retString = myStreamReader.ReadToEnd();
          myStreamReader.Close();
          myResponseStream.Close();

/////HTTPPOST

  public static string HttpPost(string Url, string postDataStr)
 {
     HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
     request.Method = "POST";
     request.ContentType = "application/x-www-form-urlencoded";
     request.ContentLength = postDataStr.Length;
     StreamWriter writer = new StreamWriter(request.GetRequestStream(),Encoding.ASCII);
     writer.Write(postDataStr);
     writer.Flush();
     HttpWebResponse response = (HttpWebResponse)request.GetResponse();
     string encoding = response.ContentEncoding;
     if (encoding == null || encoding.Length < ) {
         encoding = "UTF-8"; //默认编码
     }
     StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding));
     string retString = reader.ReadToEnd();
     return retString;
 }