如何在 C# 中 select 一个包含所有子项的 dl 标签

Question

我有问题 select 所有 dt 和 dd 来自打击 HTML table

<dl class="Grid Grid--multicol Grid--2col:40em Grid--4col:60em">
    <div class="Grid-cell u-flex u-flexOne u-flexRow">
        <dt> Item ID:</dt>
        <dd class="u-weightSemibold u-paddingL5px">72547664</dd>
    </div>
    <div class="Grid-cell u-flex u-flexOne u-flexRow">
            <dt> License:</dt>
            <dd class="u-weightSemibold u-paddingL5px">
                <a class="u-linkDodgerBlue js-infoLicenseString" href="" target="_blank">Standard</a>
            </dd>
    </div>
    <div class="Grid-cell u-flex u-flexOne u-flexRow">
            <dt> Usage:</dt>
            <dd class="u-weightSemibold">Commercial<span class="TooltipQuestionMark"></span></dd>
    </div>
    <div class="Grid-cell u-flex u-flexOne u-flexRow">
            <dt> Required Plugins:</dt>
            <dd class="u-weightSemibold u-paddingL5px">None</dd>
    </div>
    <div class="Grid-cell u-flex u-flexOne u-flexRow">
            <dt> Creation Tool:</dt>
            <dd class="u-weightSemibold u-paddingL5px">Autodesk</dd>
    </div>
    <div class="Grid-cell u-flex u-flexOne u-isHidden:0-60em"></div>
</dl>

我写这个

            i = 0; doc.DocumentNode.SelectNodes("//dl").Where(x => x.HasClass("Grid")).FirstOrDefault().SelectNodes(".//div").ToList().ForEach(x =>
            {
                result.Items.Add(new DownloadItem { Name = "specs-title", Index = i,    Type = DownloadItemType.Text, Value = x.SelectNodes(".//dt").FirstOrDefault().GetText() });
                result.Items.Add(new DownloadItem { Name = "specs",       Index = i++,  Type = DownloadItemType.Text, Value = x.SelectNodes(".//dd").GetText() });
            });

以上代码只是抓取第一行 Item ID: | 72547664 列出所有 dt 和 dd 信息有什么问题

Answer 1

你的代码的问题是，当你第一次想要用 class Grid 获取所有 dl 元素时，你只获取了 [=20] 这种类型的第一个=] 元素与方法 FirstOrDefault().

i = 0; doc.DocumentNode.SelectNodes("//dl").Where(x => x.HasClass("Grid")).SelectNodes(".//div").ToList().ForEach(x =>
            {
                result.Items.Add(new DownloadItem { Name = "specs-title", Index = i,    Type = DownloadItemType.Text, Value = x.SelectNodes(".//dt").FirstOrDefault().GetText() });
                result.Items.Add(new DownloadItem { Name = "specs",       Index = i++,  Type = DownloadItemType.Text, Value = x.SelectNodes(".//dd").GetText() });
            });

您必须删除 FirstOrDefault() 才能获取适合您需求的所有元素。

如何在 C# 中 select 一个包含所有子项的 dl 标签

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