解析形式HTML敏捷性包 [英] Parsing form with HTML Agility Pack

问题描述

我试图从一个表单中的所有输入元素。当我分析如下形式：

I'm trying to extract all input elements from a form. When I parse the following form:

<form>
<input name='test1' type='text'>
<input name='test2' type='text'>
<input name='test3' type='text'>
</form>

一切都非常完美，HTML敏捷性包能够检测在表单中输入的内容，但如果它有。像下面这样，它不会被检测到一个div父节点

everything worked perfectly, HTML Agility Pack was able to detect the input elements in the form but if it has a div parent node like the following, it will not be detected.

<form>
<div><input name='test1' type='text'></div>
<div><input name='test2' type='text'></div>
<div><input name='test3' type='text'></div>
</form>

我用下面的代码

I'm using the following code

HtmlNode.ElementsFlags.Remove("form");

foreach (HtmlAgilityPack.HtmlNode node in postForm.Elements("input"))
{
    HtmlAgilityPack.HtmlAttribute valueAttribute = node.Attributes["value"];
}

谁能告诉我哪里出了问题？谢谢

Can anyone tell me what went wrong? Thanks

推荐答案

HtmlNode.Elements 方法获取匹配第一代子节点匹配名称。当你把你的投入在< DIV> 标签，他们成为了表单元素的第二代子节点

HtmlNode.Elements method gets matching first generation child nodes matching name. After you put your inputs inside a <div> tag they become the second generation child nodes for the form element.

为使你的代码工作中使用 HtmlNode.Descendants 方法，获得具有匹配名称的所有后代节点：

To make your code work use HtmlNode.Descendants method which gets all descendant nodes with matching name:

foreach (HtmlAgilityPack.HtmlNode node in postForm.Descendants("input"))
{
   HtmlAgilityPack.HtmlAttribute valueAttribute = node.Attributes["value"];
}

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