XSLT self-closing tags issue

Question

I am using xslt to transform an xml file to html. The .net xslt engine keeps serving me self-closing tags for empty tags.

Example:

        
                      

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Answer 1

The easy way I found was creating a new XmlTextWriter class to override the method WriteEndElement, forcing the non-closing tag and pass on the serialization process as parameter.

public class MyXmlTextWriter : XmlTextWriter
{
    public MyXmlTextWriter(Stream stream) : base(stream, Encoding.UTF8)
    { }
    public MyXmlTextWriter(TextWriter stream) : base(stream)
    { }

    public override void WriteEndElement()
    {
        base.WriteFullEndElement();
    }
}

Answer 2

Change your xsl:output method to be html (instead of xml).

Or add it if you haven't already got the element

<xsl:output method="html"/>

Answer 3

Don't try this at home:

<xsl:when test="self::* and not(text())">
    <xsl:value-of select="concat('&lt;', name(), '&gt;', '&lt;/', name(), '&gt;')" disable-output-escaping="yes"/>
</xsl:when>

Answer 4

If you are using XmlWriter as your ouput stream, use HTMLTextWriter instead. XMLWriter will reformat your HTML output back to XML.

Answer 5

I use the following whenever I wish to prevent an element from self-closing:

<xsl:value-of select="''" />

This fools the rendering engine into believe there is content inside the element, and therefore prevents self-closure.

It's a bit of an ugly fix so I recommend containing it in a descriptive template and calling that each time instead:

<xsl:template name="PreventSelfClosure">
   <xsl:value-of select="''" />
</xsl:template>


<div class="test">
   <xsl:call-template name="PreventSelfClosure"/>
</div>

This will then render the following:

<div class="test"></div>

http://curtistimson.co.uk/post/xslt/how-to-prevent-self-closing-elements-in-xslt/

Answer 6

A workaround can be to insert a comment element to force generation of non self closing:

<script type="text/javascript" src="nowhere.js">
<xsl:comment></xsl:comment>
</script>

It is not a pretty soloution, but it works :-)

/Sten