asp.net實現根據城市獲取天氣預報的方法

本文實例講述了asp.net實現根據城市獲取天氣預報的方法。分享給大家供大家參考，具體如下：

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 對象 獲取GetResponse 轉換成HttpWebResponse
  System.Net.HttpWebResponse response = request.GetResponse() as System.Net.HttpWebResponse;
  //通過HttpWebResponse response.GetResponseStream()獲取輸出流
  Stream str = response.GetResponseStream();
  StreamReader reader = new StreamReader(str, System.Text.Encoding.GetEncoding("GB2312"));
  string weathhtml = reader.ReadToEnd();
  str.Close();
  reader.Close();
}

希望本文所述對大家asp.net程序設計有所幫助。