本文實例講述了asp.net實現(xiàn)根據(jù)城市獲取天氣預(yù)報的方法。，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(zhuǎn)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(shè)計有所幫助。