C# HtmlAgilityPack Select table from specific h2

Question

C# HtmlAgilityPack Select table from specific h2

c# html html-agility-pack parsing

Question

I have some html:

<h2>Results</h2>
 <div class="box">
 <table class="tFormat">
      <th>Head</th>
      <tr>1</tr>
 </table>
</div>

<h2>Grades</h2>
 <div class="box">
 <table class="tFormat">
      <th>Head</th>
      <tr>1</tr>
 </table>
</div>

I was wondering how would I get the table under "Results"

I've tried:

        var nodes = doc.DocumentNode.SelectNodes("//h2");

        foreach (var o in nodes)
        {
            if (o.InnerText.Equals("Results"))
            {
                foreach (var c in o.SelectNodes("//table"))
                {
                    Console.WriteLine(c.InnerText);             
                }
            }
        }

It works but it also gets the table under Grades h2

LuxC

Popular Answer

 var nodes = doc.DocumentNode.SelectNodes("//h2");

        if (nodes.FirstOrDefault()!=null)
        {
            var o=nodes.FirstOrDefault();
            if (o.InnerText.Equals("Results"))
            {
                foreach (var c in o.SelectNodes("//table"))
                {
                    Console.WriteLine(c.InnerText);             
                }
            }
        }

RockOnGom

View more on Stack Overflow

Accepted Answer

Note that the div is not hierarchically inside the header, so it doesn't make sense to look for it there.

This can work for you - it finds the next element after the title:

if (o.InnerText.Equals("Results"))
{
    var nextDiv = o.NextSibling;
    while (nextDiv != null && nextDiv.NodeType != HtmlNodeType.Element)
        nextDiv = nextDiv.NextSibling;
    // nextDiv should be correct here.
}

You can also write a more specific xpath to find just that div:

doc.DocumentNode.SelectNodes("//h2[text()='Results']/following-sibling::div[1]");

C# HtmlAgilityPack Select table from specific h2

Question

Accepted Answer

Popular Answer

Performance

Expression Evaluator