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Editorial Team
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Asked: 2026-05-13T01:53:34+00:00

I asked the question in a codeplex discussion but I hope to get a

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I asked the question in a codeplex discussion but I hope to get a quicker answer here at stackoverflow.

So, I use HTML Agility Pack for HTML parsing in C#.
I have the following html structure:

<body>
   <p class="paragraph">text</p>
   <p class="paragraph">text</p>
   <p class="specific">text</p>
   <p class="paragraph">text</p>
   <p class="paragraph">text</p>
</body>

And I need to get all p elements with class “paragraph” that exist after the p element with class “specific”.

Is there a way to do that?

Thanks.

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1 Answer

  1. Editorial Team

    using .Class as in Mark’s example (if that doesnt exist, substitute whatever is appropriate)

    Use SkipWhile

    e.g. in LINQPad you get 5,6,7 from:

    int[] a = { 6, 5, 6 ,7 };
a.SkipWhile(x=>x!=6).Skip(1).Dump();

    So depending on the type SelectNodes returns, either:

    .SelectNodes( "/p" ).SkipWhile( p => p.Class != "specific" ).Skip(1)

    or

    .SelectNodes( "/p" ).Cast<XX>().SkipWhile( p => p.Class != "specific" ).Skip(1)

    (or, ugly version)

    .SelectNodes( "/p" ).SkipWhile( p => ((XX)p).Class != "specific" ).Skip(1)

    (or in some cases – not if your expression is already filtering appropriately)

    .SelectNodes( "/p" ).OfType<XX>().SkipWhile( p => p.Class != "specific" ).Skip(1)

    EDIT: I’d probably create an extension method:

    static class HapExtensions
{
    public IEnumerable<T> SkipUntilAfter( this IEnumerable<T> sequence, Predicate<T> predicate) {
        return sequence.SkipWhile( predicate).Skip(1);
       }
}

    Anyone care to search up prior art for this? Any good name suggestions?

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