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 < 1) {  
        encoding = "UTF-8"; //默认编码  
    }  
    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding(encoding));  
    string retString = reader.ReadToEnd();  
    return retString;  
}