winform获取网页代码的两种方式：

   1:  WebClient wc1 = new WebClient();

   2:  wc1.Encoding = Encoding.UTF8;

   3:   string weatherData1 = wc2.DownloadString(http://www.weather.com.cn/data/sk/101280601.html);

   1:              HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://www.weather.com.cn/data/sk/101280601.html");

   2:              request.Timeout = 5000;

   3:              request.Method = "GET";

   4:              HttpWebResponse response = (HttpWebResponse)request.GetResponse();

   5:              StreamReader sr = new StreamReader(response.GetResponseStream());

   6:              string jsonstr = sr.ReadLine();