C# 无法使用html agility pack c输出特定节点#

为了熟悉c#，我正在尝试构建一个项目，我想提取某个文件添加到网站的日期。在我的例子中，我使用

问题是，我想从一开始就尝试这样的方法来提取数据：

static void Main(string[] args)
    {
        string url = "https://thepiratebay.org/search/rick%20and%20morty/0/99/0";
        HtmlWeb web = new HtmlWeb();
        HtmlDocument doc = web.Load(url);
        foreach (HtmlNode node in doc.DocumentNode.SelectNodes("//*[@id='searchResult']/tbody/tr[1]/td[2]/font"))
        {
            Console.WriteLine("you are looking for: " + node.InnerHtml.ToString());
        }

        Console.ReadKey();
    }
}

运行程序后，将引发NullReferenceException。

---

有人可以指导我吗？

检查您的XPath，正在抛出

NullReferenceException

，因为网页上的

searchResult

下没有

tbody

元素

如果我们看一段html：

<table id="searchResult">
    <thead id="tableHead">
    ...
    </thead>
    <tr>
        <td class="vertTh">
            <center>
                <a href="/browse/200" title="More from this category">Video</a><br>
                (<a href="/browse/208" title="More from this category">HD - TV shows</a>)
            </center>
        </td>
        <td>
            <div class="detName">
                <a href="/torrent/12678054/Rick_and_Morty_Season_2_[WEBRIP]_[1080p]_[HEVC]" class="detLink" title="Details for Rick and Morty Season 2 [WEBRIP] [1080p] [HEVC]">
                    Rick and Morty Season 2 [WEBRIP] [1080p] [HEVC]
                </a>
            </div>
            <a href="magnet:?xt=urn:btih:0494a80532b5b05dde567c61220d93406b7e22e7&dn=Rick+and+Morty+Season+2+%5BWEBRIP%5D+%5B1080p%5D+%5BHEVC%5D&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&tr=udp%3A%2F%2Fzer0day.ch%3A1337&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Fpublic.popcorn-tracker.org%3A6969" title="Download this torrent using magnet">
                <img src="//thepiratebay.org/static/img/icon-magnet.gif" alt="Magnet link">
            </a>
            <a href="//cdn.bitx.tv/bx.php?torrent=bWFnbmV0Oj94dD11cm46YnRpaDowNDk0YTgwNTMyYjViMDVkZGU1NjdjNjEyMjBkOTM0MDZiN2UyMmU3JmRuPVJpY2srYW5kK01vcnR5K1NlYXNvbisyKyU1QldFQlJJUCU1RCslNUIxMDgwcCU1RCslNUJIRVZDJTVEJnRyPXVkcCUzQSUyRiUyRnRyYWNrZXIubGVlY2hlcnMtcGFyYWRpc2Uub3JnJTNBNjk2OSZ0cj11ZHAlM0ElMkYlMkZ6ZXIwZGF5LmNoJTNBMTMzNyZ0cj11ZHAlM0ElMkYlMkZ0cmFja2VyLmNvcHBlcnN1cmZlci50ayUzQTY5NjkmdHI9dWRwJTNBJTJGJTJGcHVibGljLnBvcGNvcm4tdHJhY2tlci5vcmclM0E2OTY5&affid=1337&imdb=" target="_blank" title="Play now using BitX">
                <img src="//thepiratebay.org/static/img/icons/icon-bitx.png" alt="Play link">
            </a>
            <img src="//thepiratebay.org/static/img/icon_comment.gif" alt="This torrent has 7 comments." title="This torrent has 7 comments.">
            <a href="/user/.BONE.">
                <img src="//thepiratebay.org/static/img/vip.gif" alt="VIP" title="VIP" style="width:11px;" border='0'>
            </a>
            <font class="detDesc">
                Uploaded 11-03&nbsp;2015, Size 2.23&nbsp;GiB, ULed by
                <a class="detDesc" href="/user/.BONE./" title="Browse .BONE.">
                    .BONE.
                </a>
            </font>
        </td>
        <td align="right">759</td>
        <td align="right">130</td>
    </tr>
...

---

很乐意帮忙！如果此答案或任何其他答案解决了您的问题，请将其标记为已接受。

Uploaded 11-03 2015, Size 2.23 GiB, ULed by .BONE.
Uploaded 07-26 2015, Size 2.98 GiB, ULed by Anonymous
Uploaded 11-03 2015, Size 3.21 GiB, ULed by .BONE.
Uploaded 10-12 2015, Size 5.07 GiB, ULed by ToyUp
Uploaded 04-12 2014, Size 146.87 MiB, ULed by eztv
Uploaded 04-12 2014, Size 164.37 MiB, ULed by eztv
Uploaded 04-12 2014, Size 171.46 MiB, ULed by eztv
Uploaded 04-12 2014, Size 137.39 MiB, ULed by eztv
Uploaded 04-12 2014, Size 180.05 MiB, ULed by eztv
Uploaded 04-12 2014, Size 145.15 MiB, ULed by eztv
Uploaded 04-12 2014, Size 115.92 MiB, ULed by eztv
Uploaded 04-12 2014, Size 134.29 MiB, ULed by eztv
Uploaded 04-12 2014, Size 171.86 MiB, ULed by eztv
Uploaded 04-12 2014, Size 141.65 MiB, ULed by eztv
Uploaded 04-15 2014, Size 162.42 MiB, ULed by eztv
Uploaded 04-15 2014, Size 5.78 GiB, ULed by frostyon420
Uploaded 10-05 2015, Size 142.63 MiB, ULed by ettv
Uploaded 07-02 2016, Size 4.62 GiB, ULed by AtaraxiaPrime
Uploaded 08-24 2015, Size 143.38 MiB, ULed by TvTeam
Uploaded 07-27 2015, Size 207.89 MiB, ULed by ettv
Uploaded 07-28 2015, Size 941.23 MiB, ULed by frostyon420
Uploaded 06-02 2014, Size 1.02 GiB, ULed by Minified
Uploaded 09-21 2015, Size 455.91 MiB, ULed by EtHD
Uploaded 04-18 2014, Size 5.24 GiB, ULed by nsj7762
Uploaded 08-31 2015, Size 165.22 MiB, ULed by TvTeam
Uploaded 06-28 2016, Size 8.69 GiB, ULed by fauxcon
Uploaded 08-03 2015, Size 198.86 MiB, ULed by TvTeam
Uploaded 08-03 2015, Size 190.11 MiB, ULed by punsher
Uploaded 08-17 2015, Size 853.25 MiB, ULed by frostyon420
Uploaded 09-28 2015, Size 399.73 MiB, ULed by Joker__TPB