O'Reilly logo

.NET & XML by Niel M. Bornstein

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Scripting with XslTransform

Creating and manipulating stylesheets is all well and good if all you need to do is use XSLT’s built-in abilities. But .NET’s XSLT tools can do a lot more. They allow you to execute arbitrary C#, Visual Basic, or JScript code embedded in the stylesheet, pass arguments to the XSLT processor, and call back to methods in your own C# code from expressions in the XSLT code.

Embedded scripts

.NET has the ability to interpret script code embedded within the XSLT stylesheet. Example 7-9 shows the same catalog.xsl stylesheet shown previously, but with a few minor changes. I’ll explain the highlighted changes.

Example 7-9. Catalog stylesheet with embedded scripting
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet 
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:msxsl="urn:schemas-microsoft-com:xslt"
  xmlns:angus="http://angushardware.com/"
  version="1.0">

  <msxsl:script implements-prefix="angus" language="C#">
    <![CDATA[
      decimal CalculateInventoryValue(int number, decimal unitCost) {
          return number * unitCost;
      }
    ]]>
  </msxsl:script> <xsl:output method="html"/> <xsl:template match="/"> <html> <head> <title>Angus Hardware | Online Catalog</title> </head> <xsl:apply-templates/> </html> </xsl:template> <xsl:template match="inventory"> <body bgcolor="#FFFFFF"> <h1>Angus Hardware</h1> <h2>Online Catalog</h2> <xsl:apply-templates/> </body> </xsl:template> <xsl:template match="date"> <p>Current as of <xsl:value-of select="@month" />/<xsl: value-of select="@day" ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required