使用 HTMLAGILITYPACK 解析 html 并加载到数据表 C#答案

【问题标题】：parsing html with HTMLAGILITYPACK and loading into datatable C#使用 HTMLAGILITYPACK 解析 html 并加载到数据表 C#
【发布时间】：2012-03-05 03:18:24
【问题描述】：

我的 HTML 看起来像这样：

<body class="style_0">
        <div>
            <div class="style_1">Pending Test List</div>
            <table style=" width: 100%;" id="AUTOGENBOOKMARK_4365445353431356880">
                <col>
                <col>
                <tbody>
                    <tr>
                        <td style="vertical-align: baseline;">
                            <div class="style_4">Pending Test List</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_5">SOME AGENCY Laboratories, Inc.</div>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="style_6" style=" width: 4.531in;" id="AUTOGENBOOKMARK_5083738604442918131">
                <col style=" width: 1in;">
                <col class="style_7" style=" width: 0.75in;">
                <col class="style_8" style=" width: 0.6in;">
                <col style=" width: 0.75in;">
                <col style=" width: 2.375in;">
                <tbody>
                    <tr class="style_9" style=" height: 0.5in;">
                        <td style="vertical-align: middle;">
                            <div class="style_10">Report Range:</div>
                        </td>
                        <td style="vertical-align: middle;">
                            <div class="style_11">01/01/2012</div>
                        </td>
                        <td style="vertical-align: middle;">
                            <div class="style_12">through</div>
                        </td>
                        <td style="vertical-align: middle;">
                            <div class="style_13">01/31/2012</div>
                        </td>
                        <td style="vertical-align: middle;">
                            <div class="style_14">(by Date Entered)</div>
                        </td>
                    </tr>
                </tbody>
            </table>
            <table class="style_15" style=" width: 100%;" id="AUTOGENBOOKMARK_7602283385844673591" iid="/526

(QuRs78576248:0)">
                <col style=" width: 0.75in;">
                <col style=" width: 1.25in;">
                <col style=" width: 1in;">
                <col style=" width: 1.5in;">
                <col style=" width: 1.5in;">
                <col style=" width: 1.5in;">
                <col>
                <thead>
                    <tr>
                        <td colspan="4" style="vertical-align: baseline;"></td>
                        <td style="vertical-align: baseline;"></td>
                        <td style="vertical-align: baseline;"></td>
                        <td style="vertical-align: baseline;"></td>
                    </tr>
                    <tr>
                        <td style="vertical-align: baseline;">
                            <div class="style_16">Entered</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_16">Spec. ID</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_16">Batch/Pos.</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_16">Test</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_16">Client ID</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_16">Client Name</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_16">Agency</div>
                        </td>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">1/30/12</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_19">ZZ324sdf</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">51446 / 75</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">HOLD_DE</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">234234</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">smith, john</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">PPPM-6P - SOME AGENCY</div>
                        </td>
                    </tr>
                    <tr>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">1/31/12</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_19">SFD3434</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">51668 / 17</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">HOLD_DE</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">FOY, EL</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">FOY, ALEX</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">someagency &amp; Associates LLC</div>
                        </td>
                    </tr>
                    <tr>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">1/31/12</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_19">SFD3434</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">51668 / 25</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">HOLD_DE</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">JAMISON, PA</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">JAMISON, ROY</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">someagency &amp; Associates LLC</div>
                        </td>
                    </tr>
                    <tr>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">1/31/12</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_19">SFD3434</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_18">51669 / 34</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">HOLD_DE</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">NEWMAN, SO</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">NEWMAN, ALEX</div>
                        </td>
                        <td class="style_17" style="vertical-align: baseline;">
                            <div class="style_20">someagency &amp; Associates LLC</div>
                        </td>
                    </tr>
                </tbody>
                <tfoot>
                    <tr>
                        <td colspan="2" style="vertical-align: baseline;">
                            <div class="style_21">Total Tests:</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_22">4</div>
                        </td>
                        <td style="vertical-align: baseline;"></td>
                        <td style="vertical-align: baseline;"></td>
                        <td style="vertical-align: baseline;"></td>
                        <td style="vertical-align: baseline;"></td>
                    </tr>
                </tfoot>
            </table>
            <table style=" width: 100%;" id="AUTOGENBOOKMARK_8507236727661888074">
                <col>
                <col>
                <col>
                <tbody>
                    <tr>
                        <td style="vertical-align: baseline;">
                            <div class="style_2">
                                <br>Feb 13, 2012 9:37 AM</div>
                        </td>
                        <td style="vertical-align: baseline;">
                            <div class="style_3">
                                <br>
                                <div style="text-align:center;">Page 1</div>
                            </div>
                        </td>
                        <td style="vertical-align: baseline;"></td>
                    </tr>
                </tbody>
            </table>
        </div>
    </body>

渲染后看起来像这样：

这是我想从那里解析出来的数据：

1/30/12 ZZ324sdf 51446 / 75 HOLD_DE 234234 smith, john PPPM-6P - 部分 AGENCY 1/31/12 SFD3434 51668 / 17 HOLD_DE FOY, EL FOY, ALEX & Associates LLC 1/31/12 SFD3434 51668 / 25 HOLD_DE JAMISON, PA JAMISON, ROY someagency & Associates LLC 1/31/12 SFD3434 51669 / 34 HOLD_DE NEWMAN, SO NEWMAN, ALEX someagency & Associates LLC

到目前为止我已经尝试过：

foreach (HtmlNode link in htmlSnippet.DocumentNode.SelectNodes("//a[@href]"))
    {
        HtmlAttribute att = link.Attributes["href"];
        hrefTags.Add(att.Value);
    }

但我知道这只会提取 AHREF，我想提取表格元素。

我该怎么做？非常感谢您的帮助。

【问题讨论】：

标签： c# html html-agility-pack

【解决方案1】：

稍微不同地想一想——而不是想要每个锚点（带有href），您想要类style_15的表格主体中的每一行（该id看起来非常动态生成）；然后，对于每一行，您都需要每个单元格。

foreach (var row in htmlSnippet.DocumentNode.SelectNodes("//table[@class = 'style_15']/tbody/tr"))
{
    foreach (var cell in row.SelectNodes("td"))
    {
        // Do something
    }
}

【讨论】：

非常感谢您。如果你说 style_15 是动态生成的，我们可以相信它会一直保持不变吗？
在不知道源数据是如何生成的情况下，我只能猜测；但是，根据提供的示例中的外观，样式看起来比桌子上的 id 不太可能发生变化。您可以随时查看文档（如果有）或进行实验以进一步检查。
cell有tostring方法吗？我可以做 cell.ToString()??
更有可能，您会想要 InnerText 属性（我相信 Intelisense 可以为您指明正确的方向）
谢谢！如果我的所有 HTML 都在一个字符串中，我该怎么做 foreach (var row in SomeHTMLString ....？