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Defining Namespace Prefixes for Extension Functions

To use the Microsoft XPath Extension functions, you must declare the appropriate namespaces in an XSLT style sheet, as follows:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

It is important that the namespace URI, urn:schemas-microsoft-com:xslt, must appear exactly as shown above. It is reasonable to choose ms as the namespace prefix, although you can use a name of your choosing for the prefix. For example, the following code snippet is equally valid:

<xsl:stylesheet version="1.0"
<xsl:template match="*">
   <xsl:value-of select="ext:type-local-name()"/>

The namespace prefix can also be defined within the XSLT element, as follows.

<xsl:for-each select="//[ms:type-local-name()='ID'] xmlns:ms="urn:schemas-microsoft-com:xslt">

When using the DOM, the namespace prefix is declared using the setProperty method of IXMLDOMDocument2.

docObj.setProperty("SelectionNamespaces", "xmlns:ms='urn:schemas-microsoft-com:xslt'")

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