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Editorial Team
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Asked: 2026-06-13T09:30:16+00:00

Consider the following HTML fragment ( _ is used for whitespace): <head> … <link

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Consider the following HTML fragment (_ is used for whitespace):

<head>
    ...
    <link ... ___/>
    <!-- ... -->
    ...
</head>

I’m using Html Agility Pack (HAP) to read HTML files/fragments and to strip out links. What I want to do is find the LINK (and some other) elements and then replace them with whitespace, like so:

<head>
    ...
    ____________
    <!-- ... -->
    ...
</head>

The parsing part seems to be working so far, I get the nodes I’m looking for. However, HAP tries to fix the HTML content while I need everything to be exactly the same, except for the changes I’m trying to make. Plus, HAP seems to have quite a few bugs when it comes to writing back content that was read in previously, so the approach I want to take is let HAP parse the input and then I go back to the original input and replace content that I don’t want.

The problem is, HtmlNode doesn’t seem to have an input length property. It has StreamPosition which seems to indicate where reading of the node’s content started within the input but I couldn’t find a length property that’d tell me how many characters were consumed to build the node.

I tried using the OuterHtml propety but, unfortunately, HAP tries to fix the LINK by removing the ___/ part (a LINK element is not supposed to be closed). Because of this, OuterHtml.Length returns the wrong length.

Is there a way in HAP to get this information?

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1 Answer

  1. Editorial Team

    I ended up modifying the code of HtmlAgilityPack to expose a new property that returns the private _outerlength field of HtmlNode.

    public virtual int OuterLength
{
    get
    {
        return ( _outerlength );
    }
}

    This seems to be working fine so far.

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