C#获取网页HTML源码实例

    string _html = string.Empty;
    try
    {
 HttpWebRequest _request = (HttpWebRequest)WebRequest.Create(url);
 HttpWebResponse _respOnse= (HttpWebResponse)_request.GetResponse();
 using (Stream _stream = _response.GetResponseStream())
 {
     using (StreamReader _reader = new StreamReader(_stream, charset))
     {
  _html = _reader.ReadToEnd();
     }
 }
    }
    catch (WebException ex)
    {
 using (StreamReader sr = new StreamReader(ex.Response.GetResponseStream()))
 {
     _html = sr.ReadToEnd();
 }
    }
    catch (Exception ex)
    {
 _html = ex.Message;
    }
    return _html;
}