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[XSLT Reference] [XPath Reference] [Download Reference Download this Reference]

Element: xsl:key

Can be used to create index-like structures that can be queried from the key function. It basically is a way to describe name/value pairs inside the source document (like a Dictionary object in VB or an associative array in Perl). Only in XSLT, more than one value can be found for one key and the same value can be accessed by multiple keys.
Attributes
name
Type:qname
The name that can be used to refer to this key.
match
Type:pattern
The pattern defines which nodes in the source document can be accessed using this key. In the name/value pair analogy, this would be the definition of the value.
use
Type:expression
This expression defines what the key for accessing each value would be. Example: if an element PERSON is matched by the match attribute and the use attribute equals "@name", the key function can be used to find this specific PERSON element by passing the value of its name attribute.
ImplementedW3C 1.0 specification (recommendation)
MSXML 3.0
MSXML 4.0
XML classes in .NET Framework class library
Can contain
Can be contained by[xsl:stylesheet] [xsl:transform]
Examples[Creating a summary of author sales for a publisher] [Creating listboxes and checkboxes using parameters] [Creating listboxes and checkboxes using variables]

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© 2000 Teun Duynstee. Shown on TopXML.com. Information used from XSLT and XPath recommendations © W3C and MSDN documentation © Microsoft.
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