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Asked: 2026-05-10T23:04:07+00:00

I need to parse Visual Studio automatically generated XML documentation to create a report.

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I need to parse Visual Studio automatically generated XML documentation to create a report. I decided to use XSLT but I’m very new to it and need help. Common template is:

<doc>   <members>     <member name='F:MyNamespace'>       <summary>Some text</summary>     </member>    </members> </doc>

I want to isolate members with name which begins on some word, for example, P:Interfaces.Core. I decided to use RegExp in select statement.

<?xml version='1.0' encoding='utf-8'?> <xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'         xmlns:fn='http://www.w3.org/TR/xpath-functions/'>     <xsl:template match='/' >         <html xmlns='http://www.w3.org/1999/xhtml'>             <body style='font-family:Tahoma'>                 <p>Interfaces list:</p>                 <table>                     <xsl:for-each select='doc/members/member'>                         <xsl:sort order='ascending' />                         <xsl:value-of select='fn:matches(., 'P\..+')' />                         <br />                     </xsl:for-each>                 </table>             </body>         </html>     </xsl:template> </xsl:stylesheet>

Why does I’m getting error:

Namespace http://www.w3.org/TR/xpath-functions does not contain any functions >

Where am I wrong? I found such code in examples, including w3c.org!

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1 Answer

  1. In case you’re performing the transformation with Visual Studio X, where X is not greater than 2008, this would be processed by an XSLT 1.0 processor (.NET’s XslCompiledTransform or XslTransform). XSLT 1.0 uses XPath 1.0, not XPath 2.0 and its F & O (Functions and Operations), which only became a W3 Recommendation last year.

    You have two options:

    1. Use a compliant XSLT 2.0 processor. If you prefer to stay within the .NET platform, then a suitable choice is Saxon.NET

    2. Just use the XPath 1.0 function starts-with(), which is sufficient to solve the current problem.
      The expression: starts-with(., 'P:Interfaces') is evaluated to true() if the string value of the context node starts with the string ‘P:Interfaces’ and to false() otherwise.

    Another Xpath 1.0 function that may come handy for such type of processing is the function contains().

    Xpath’s 2.0 function ends-with() can be emulated in XPath 1.0 in the following way:

    ends-with(s1, s2) ====substring(s1,string-length(s1)-string-length(s2)+1)=s2

    where ‘===‘ means is ‘equivalent to’.

    Here we also used the XPath 1.0 functions substring() and string-length().

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