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Asked: 2026-05-10T20:51:43+00:00

I’m trying to convert some Xaml to HTML using the .NET XslCompiledTransform and am

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I’m trying to convert some Xaml to HTML using the .NET XslCompiledTransform and am running into difficulties getting the xslt to match Xaml tags. For instance with this Xaml input:

<FlowDocument PagePadding='5,0,5,0' AllowDrop='True' NumberSubstitution.CultureSource='User' xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'>   <Paragraph>a</Paragraph> </FlowDocument>

And this xslt:

<?xml version='1.0' encoding='utf-8'?> <xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'     xmlns:msxsl='urn:schemas-microsoft-com:xslt' exclude-result-prefixes='msxsl' >    <xsl:output method='html' indent='yes'/>    <xsl:template match='/'>     <html>       <body>         <xsl:apply-templates />       </body>     </html>   </xsl:template>    <xsl:template match='FlowDocument'>     <xsl:apply-templates />   </xsl:template>    <xsl:template match='Paragraph' >     <p>       <xsl:apply-templates />     </p>   </xsl:template>

I get this output:

<html>     <body>   a </body> </html>

Rather than the expected:

<html>    <body>       <p>a</p>    </body> </html>

Could this be a problem with the namespace? This is my first attempt at an xsl transform, so I’m at a loss.

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1 Answer

  1. Yes, it’s a problem with the namespace. All of the elements in your input document are in the namespace http://schemas.microsoft.com/winfx/2006/xaml/presentation. Your template is trying to match elements that are in the default namespace, and it’s not finding any.

    You need to declare this namespace in your transform, assign it a prefix, and then use that prefix in any patterns that are intended to match elements in that namespace. So your XSLT should look something like this:

    <?xml version='1.0' encoding='utf-8'?> <xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'     xmlns:msxsl='urn:schemas-microsoft-com:xslt'      xmlns:p='http://schemas.microsoft.com/winfx/2006/xaml/presentation'     exclude-result-prefixes='msxsl'/>  <xsl:output method='html' indent='yes'/>  <xsl:template match='/'>   <html>     <body>       <xsl:apply-templates />     </body>   </html> </xsl:template>  <xsl:template match='p:FlowDocument'>   <xsl:apply-templates /> </xsl:template>  <xsl:template match='p:Paragraph' >   <p>     <xsl:apply-templates />   </p> </xsl:template>
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