CODEWITHSUNDEEP
htmltags
Laurent T.
Laurent T.

Reputation: 41

html sanitizer remove custom tag and keep inner content

How can i remove all unknown existings custom tags keeping html content in this following example : 

<div>
  <h1>my header</h1>
  <custom:p>
     <h2>my Title</h2>
  </custom:p>
  <anothercustom:p>
     <h3>my SubTitle</h3>
  </anothercustom:p>
</div>

I would like to return 

<div>
  <h1>my header</h1>
  <h2>my Title</h2>
  <h3>my SubTitle</h3>
</div>

Is there any solution with HTML sanitizer ?

Thanks for your help.

Upvotes: 4

Views: 5752

Answers (3)

Rahul Sekhar
Rahul Sekhar

Reputation: 2841

I've been looking for the same thing. I found that HtmlSanitizer has a KeepChildNodes option in version 3.4.156, which I'm using, that does exactly this.

var sanitizer = new HtmlSanitizer();
sanitizer.KeepChildNodes = true;
sanitizer.Sanitize(html);

Upvotes: 4

Luna
Luna

Reputation: 1488

You can use the HtmlSanitizer.RemovingTag event to keep the contents of the tag:

        var sanitizer = new HtmlSanitizer();

        sanitizer.RemovingTag += (sender, args) =>
        {
            args.Tag.OuterHtml = sanitizer.Sanitize(args.Tag.InnerHtml);
            args.Cancel = true;
        };

        var sanitized = sanitizer.Sanitize("<unknown>this will not be removed</unknown>");

Upvotes: 2

Seth Greenstein
Seth Greenstein

Reputation: 153

Assuming you are using the htmlSanitizer for .net on git hub https://github.com/mganss/HtmlSanitizer

You can modify the opensource project to preserve the content of the tags Change the RemoveTag method of the HtmlSanitize class as follows:

/// <summary>
        /// Remove a tag from the document.
        /// </summary>
        /// <param name="tag">to be removed</param>
        private void RemoveTag(IDomObject tag)
        {
            var e = new RemovingTagEventArgs { Tag = tag };
            OnRemovingTag(e);
            if (!e.Cancel)
            {
                // tag.Remove();<<remove this;

                //replace it with this vvvvvvvvvvvvvv
                tag.OuterHTML = this.Sanitize(tag.InnerHTML);
            }
        }

Upvotes: 0

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