筛选网页信息获取天气预报

天气预报 private static void GetTian7OnlineWeather try WebRequest wreq WebRequest Create HttpWebResponse wresp HttpWebResponse wreq GetResponse string HTML Stream s wresp GetResponseStream StreamReader objReader new StreamReader s System Text Encoding Default HTML objReader ReadToEnd if HTML null HTML return string AllWeather lowest1 lowest2 highest1 highest2 morning1 morning2 afternoon1 afternoon2 night1 night2 int start stop HTML HTML ToLower 取得城市天气的地址 start HTML IndexOf 徐州 0 start HTML IndexOf href start stop HTML IndexOf start 6 string href HTML Substring start 6 stop start 6 获取页面数据 href href wreq WebRequest Create href wresp HttpWebResponse wreq GetResponse HTML s wresp GetResponseStream objReader new StreamReader s System Text Encoding Default HTML objReader ReadToEnd if HTML null HTML return HTML HTML ToLower start HTML IndexOf 最低温度 0 start HTML IndexOf start stop HTML IndexOf start lowest1 HTML Substring start 3 stop start 3 start HTML IndexOf stop stop HTML IndexOf start lowest2 HTML Substring start 3 stop start 3 start HTML IndexOf 最高温度 0 start HTML IndexOf start stop HTML IndexOf start highest1 HTML Substring start 3 stop start 3 start HTML IndexOf stop stop HTML IndexOf start highest2 HTML Substring start 3 stop start 3 start HTML IndexOf 上午 0 start HTML IndexOf title start stop HTML IndexOf start 7 morning1 HTML Substring start 7 stop start 7 start HTML IndexOf title start stop HTML IndexOf start 7 morning2 HTML Substring start 7 stop start 7 start HTML IndexOf 下午 0 start HTML IndexOf title start stop HTML IndexOf start 7 afternoon1 HTML Substring start 7 stop start 7 start HTML IndexOf title start stop HTML IndexOf start 7 afternoon2 HTML Substring start 7 stop start 7 start HTML IndexOf 晚上 0 start HTML IndexOf title start stop HTML IndexOf start 7 night1 HTML Substring start 7 stop start 7 start HTML IndexOf title start stop HTML IndexOf start 7 night2 HTML Substring start 7 stop start 7 lowest1 Replace lowest1 Replace highest1 highest1 Replace highest1 highest1 Replace lowest2 Replace lowest2 Replace highest2 highest1 Replace highest2 highest1 Replace AllWeather 今日天气 lowest1 highest1 morning1 afternoon1 night1 AllWeather AllWeather 明日天气 lowest2 highest2 morning2 afternoon2 night2 AllWeather AllWeather Replace AllWeather AllWeather string path OnlineWeather xml FileStream fs new FileStream path FileMode Create FileAccess Write StreamWriter writer new StreamWriter fs Encoding Default writer Writ