public List GetUrl()
{
  try
  {
    string url = "http://baijia.baidu.com/";
    WebRequest webRequest = WebRequest.Create(url);
    WebResponse webResponse = webRequest.GetResponse();
    StreamReader reader = new StreamReader(webResponse.GetResponseStream());
    string result = reader.ReadToEnd();
    reader.Close();
    webResponse.Close();
    return AnalysisHtml(result);
  }
  catch (Exception ex)
  {
    throw ex;
  }
}

public List AnalysisHtml(string htmlContent)
{
  List list = new List();
  string strPattern = "
(?