在一个特定的DIV使用HtmlAgilityPack只选择项目 [英] Select only items in a specific DIV using HtmlAgilityPack

问题描述

我试图用HtmlAgilityPack拉都从一个页面都包含在一个div声明为＆LT的联系; DIV CLASS ='内容'＆GT; 然而，当我使用code下面我简单地得到整个页面上的所有链接。这并没有真正意义的我，因为我打电话从我之前选择的子节点（在调试器中查看时，只显示该特定DIV的HTML）的SelectNodes。所以，它就像它的每一次我打电话的SelectNodes时光倒流到非常根节点。在code我用的是如下：

I'm trying to use the HtmlAgilityPack to pull all of the links from a page that are contained within a div declared as <div class='content'> However, when I use the code below I simply get ALL links on the entire page. This doesn't really make sense to me since I am calling SelectNodes from the sub-node I selected earlier (which when viewed in the debugger only shows the HTML from that specific div). So, it's like it's going back to the very root node every time I call SelectNodes. The code I use is below:

HtmlWeb hw = new HtmlWeb();
HtmlDocument doc = hw.Load(@"http://example.com");
HtmlNode node = doc.DocumentNode.SelectSingleNode("//div[@class='content']");
foreach(HtmlNode link in node.SelectNodes("//a[@href]"))
{
    Console.WriteLine(link.Value);
}

这是预期的行为？如果是这样，我怎么得到它做什么，我期待？

Is this the expected behavior? And if so, how do I get it to do what I'm expecting?

推荐答案

这将工作：

node.SelectNodes("a[@href]")

此外，您还可以做到在一个单一的选择：

Also, you can do it in a single selector:

doc.DocumentNode.SelectSingleNode("//div[@class='content']//a[@href]")

另外，还要注意 link.Value 为 HtmlNode 没有定义，所以你的code没有按T编译。

Also, note that link.Value isn't defined for HtmlNode, so your code doesn't compile.

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