public string YahooStockRequest(string Symbols,bool UseYahoo=true)
{
{
string StockQuoteUrl = string.Empty;
try
{
// Use Yahoo finance service to download stock data from Yahoo
if (UseYahoo)
{
string YahooSymbolString = Symbols.Replace(",","+");
StockQuoteUrl = @"http://finance.yahoo.com/q?s=" + YahooSymbolString + "&ql=1";
}
else
{
//Going to Put Google Finance here when I Figure it out.
}
// Initialize a new WebRequest.
HttpWebRequest webreq = (HttpWebRequest)WebRequest.Create(StockQuoteUrl);
// Get the response from the Internet resource.
HttpWebResponse webresp = (HttpWebResponse)webreq.GetResponse();
// Read the body of the response from the server.
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
string pageSource;
using (StreamReader sr = new StreamReader(webresp.GetResponseStream()))
{
pageSource = sr.ReadToEnd();
}
doc.LoadHtml(pageSource.ToString());
if (UseYahoo)
{
string Results=string.Empty;
//loop through each Symbol that you provided with a "," delimiter
foreach (string SplitSymbol in Symbols.Split(new char[] { ',' }))
{
Results+=SplitSymbol + " : " + doc.GetElementbyId("yfs_l10_" + SplitSymbol).InnerText + Environment.NewLine;
}
return (Results);
}
else
{
return (doc.GetElementbyId("ref_14135_l").InnerText);
}
}
catch (WebException Webex)
{
return("SYSTEM ERROR DOWNLOADING SYMBOL: " + Webex.ToString());
}
}
}
为了使用 Google 的金融数据 API 来查找图表数据，你只需要像查找搜索关键词一样登录 Google，在搜索引擎中输入 finance，然后就会出现一个到 Google finance 的链接。在 Google 金融搜索引擎中，在金融数据 API 引擎中输入股票代码名称，结果就会显示出来。然而，应该指出的是，所有的谷歌财务图表都会延迟15分钟，最多只能用来更好地了解股票代码的过去历史，而不是当前的价格。
