选择下一个节点 html 敏捷包 C#

Question

我是第一次使用 htmlagilitypack 的学生。我目前正在过滤 html 以使用

获取值

foreach (HtmlNode link in bodyNode.SelectNodes("//span[@class='content-b']"))
{
    if (link.InnerText.Contains("Name"))
    {
        //MessageBox.Show("Found");
        textBox1.Text += "Name : " + ?????;
    }

    textBox1.Text += link.InnerText;
}

如您所见，我正在检查当前节点是否包含值“NAME”，如果是，我想获取下一个节点的值。如果您能帮我解决这个问题，我将非常感激。

名称的值在下一个节点 <div class='content-b'>THIS IS MY NAME</div> 中。我如何有问题地告诉 C# 在再次循环之前获取下一个节点？

谢谢。

---

更新：这是我正在使用的 html 代码片段，它看起来很丑，对不起，我无能为力

<span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Name of the Author: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class="">Undertaker</font></font></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Name movie: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class="">Some Movie Name</font></font></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Room Online: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class="">skype123</font></font></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Subsites and site: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class="">google.nl</font></font></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Year: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class="">2013. </font></font></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Genre: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class="">Horror</font></font></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Length: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class="">00:35:45 </font></font></span></span></span></span><span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font class="">Description: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font class=""><font>Paragraph 1</font><font>Paragraph 2</font><font>Paragraph 3</font></font><br></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font>Video Format: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font>MP4 </font></font></span></span></span></span> <span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font>Video: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font>MPEG4 Video (H264) 720x404 29.97fps 1000Kbps </font></font></span></span></span></span><span class="post-align" style="text-align: center;"><span style="font-family: Kristen ITC;"><span style="font-size: 16px; line-height: normal;"><span style="color: #009933;"><span class="content-b"><font><font>Audio: </font></font></span></span> <span style="font-size: 12px; line-height: normal;"><span class="content-b"><font><font>AAC 44100Hz stereo 96Kbps</font></font></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

谢谢。

Answer 1

您正在寻找的是节点的 NextSibling 属性。在您的示例中：

foreach (HtmlNode link in bodyNode.SelectNodes("//div[@class='content-b']"))
{
    if (link.InnerText.Contains("Name"))
    {
        //MessageBox.Show("Found");
        textBox1.Text += "Name : " + link.NextSibling.InnerText;
    }

    textBox1.Text += link.InnerText;
}

Answer 2

首先，您的文档中没有class="content-b"。它们都拼写为 contet-b。

其次，由于 html 格式不正确，NextSibling 将不起作用。您需要手动获取与条件匹配的下一个节点。在这种情况下，您不能使用 foreach 循环。

结果如下：

var nodes = bodyNode.SelectNodes("//div[@class='contet-b']").ToList();
for( int i =0; i < nodes.Count; i++)
{
    var link = nodes[i];
    if (link.InnerText.Contains("Name"))
    {
        textBox1.Text += "Name : ";
        if (i + 1 < nodes.Count)
        {
            // append the value of next matching `div` node
            textBox1.Text += nodes[i + 1].InnerText.Trim();
            i++; // skip this node
        }
    }
}