获得使用I帧的源HtmlAgilityPack [英] get i frame source using HtmlAgilityPack

问题描述

我试图让所有的iFrame源URL上的HTML文档。我尝试使用HtmlAgilityPack使用XPath - 但我似乎并没有越来越源列表

I am trying to get all iFrame source urls on an html doc. I tried using HtmlAgilityPack with xpath - but i don't seem to be getting a list of sources.

HtmlAgilityPack.HtmlDocument myHtml= new HtmlDocument();
myHtml.LoadHtml(htmlString);

foreach (HtmlNode framesrc) in myHtml.DocumentNode.SelectNodes("//iframe/src"))
{
    srcCollection.add(framesrc);
}

是我的XPath错了吗？谢谢！

Is my xpath wrong? Thanks!

推荐答案

其实这个开源的HTML解析器使用的查询看起来像下面的查询：

Actually this opensource html parser uses query look like following query:

HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();

HtmlNodeCollection nodes = doc.DocumentNode.SelectNodes("//iframe[@src]");


foreach(var node in nodes){
    HtmlAttribute attr = node.Attributes["src"];
    Console.WriteLine(attr.Value);
}

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