Question

我有一个类似

的HTML

<body>
<tr class="sysinfoTableCategoryHeader">
    <td colspan="4">Operating System</td>
</tr>

    <tr class="sysinfoTablePropertyEven">
        <td />
        <td />
        <td><span class="sysinfoTablePropertyKey">Operating System Name</span></td>
        <td><span class="sysinfoTablePropertyValue">Linux</span></td>
    </tr>

    <tr class="sysinfoTablePropertyOdd">
        <td />
        <td />
        <td><span class="sysinfoTablePropertyKey">Kernel Version</span></td>
        <td><span class="sysinfoTablePropertyValue">4.8.0-1-amd64</span></td>
    </tr>

<tr class="sysinfoTableCategoryHeader">
    <td colspan="4">Motherboard</td>
</tr>

    <tr class="sysinfoTablePropertyEven">
        <td />
        <td />
        <td><span class="sysinfoTablePropertyKey">Manufacturer</span></td>
        <td><span class="sysinfoTablePropertyValue">Acer</span></td>
    </tr>

    <tr class="sysinfoTablePropertyOdd">
        <td />
        <td />
        <td><span class="sysinfoTablePropertyKey">Product</span></td>
        <td><span class="sysinfoTablePropertyValue">Aspire E5-531</span></td>
    </tr>
</body>

所以我能够从这个html文件中挑选出最棒的东西。但是有一个问题。可以说，我想忽略class name="sysinfoTableCategoryHeader"操作系统的节点。

这完全可行吗？

我的输出应该是这样

<body>
<tr class="sysinfoTableCategoryHeader">
    <td colspan="4">Motherboard</td>
</tr>

    <tr class="sysinfoTablePropertyEven">
        <td />
        <td />
        <td><span class="sysinfoTablePropertyKey">Manufacturer</span></td>
        <td><span class="sysinfoTablePropertyValue">Acer</span></td>
    </tr>

    <tr class="sysinfoTablePropertyOdd">
        <td />
        <td />
        <td><span class="sysinfoTablePropertyKey">Product</span></td>
        <td><span class="sysinfoTablePropertyValue">Aspire E5-531</span></td>
    </tr>
</body>

我如何与HTMLAGILITYPACK配合使用？

Answer 1

我有点英语。验证码：

    HtmlDocument htmlDoc = new HtmlDocument(); 
htmlDoc.LoadHtml(your html code); 
HtmlNodeCollection htmlNodes = htmlDoc.DocumentNode.SelectNodes("//body/tr[@class!='sysinfoTableCategoryHeader']");

您需要htmlNodes。或使用RemoveAllIDforNode（）;

    HtmlNodeCollection htmlNodes = htmlDoc.DocumentNode.SelectNodes("//body/tr[@class='sysinfoTableCategoryHeader']"); 

foreach (HtmlNode node in htmlNodes) {
 htmlDoc.DocumentNode.RemoveAllIDforNode(node); 
}

Answer 2

您需要找到xpath // tr [@class！='sysinfoTableCategoryHeader'] xpath具有操作符。

忽略一些TR节点

2 个答案: