两个关联页面的动态数据抓取

[qq_28750173]

第一个页面输入查询条件后点击查询 跳转到第二个页面生成查询数据
怎么抓取第二个页面的数据
我是新手刚开始做这个 希望给我些提示

[qq_28750173]

比如：http://www.urumqi-air.com/ 打开后选择搜索数据 点击搜索 跳转到另一个页面 获得跳转后的页码的数据 才学习这个 不怎么懂 希望具体的思路和操作问题给我解析一下 小弟感激不尽

[qq_28053691]

public string flightSearch(string oneway,string orgcity,string dstcity,string flightdate) { string Url = "https://www.urumqi-air.com/flight/searchflight!getFlights.action"; //string Referer = "https://www.urumqi-air.com/flight/searchflight.action?tripType="+oneway+"&orgCity1="+orgcity+"&dstCity1="+dstcity+"&flightdate1="+flightdate+"&flightdate2="; string PostData = "<flight><tripType>"+oneway+"</tripType><orgCity1>"+orgcity+"</orgCity1><dstCity1>"+dstcity+"</dstCity1><flightdate1>"+flightdate+"</flightdate1><index>1</index></flight>"; string flights = post(Url, PostData); return flights; } public string post(string url, string str) { HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url); req.Method = "POST"; req.Host = "www.urumqi-air.com"; req.UserAgent = "Mozilla/5.0 (Windows NT 6.1; rv:41.0) Gecko/20100101 Firefox/41.0"; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; //req.Referer = refer; byte[] buf = Encoding.UTF8.GetBytes(str); req.ContentLength = buf.Length; using (Stream s = req.GetRequestStream()) { s.Write(buf, 0, buf.Length); } HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); using (Stream s = resp.GetResponseStream()) { using (StreamReader sr = new StreamReader(s)) { return sr.ReadToEnd(); } } }