asp. net method for obtaining weather forecast according to city

In this paper, the method of obtaining weather forecast according to cities by asp. net is described with examples. Share it for your reference, as follows:

public void GetWetheaerByCity(string cityName) {
  string city = cityName;
  string mycity = HttpUtility.UrlEncode(city, System.Text.Encoding.GetEncoding("GB2312"));
  System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create("http://www.sina.com/index.php?city=" + cityName);
  //HttpWebRequest  Object   Get GetResponse  Convert to HttpWebResponse
  System.Net.HttpWebResponse response = request.GetResponse() as System.Net.HttpWebResponse;
  // Pass HttpWebResponse response.GetResponseStream() Get the output stream 
  Stream str = response.GetResponseStream();
  StreamReader reader = new StreamReader(str, System.Text.Encoding.GetEncoding("GB2312"));
  string weathhtml = reader.ReadToEnd();
  str.Close();
  reader.Close();
}

I hope this article is helpful to everyone's asp. net programming.