Re: Why does this XPath not work

OK - thanks


On Mon, 21 Jul 2008 04:38:14 GMT, stcheng@xxxxxxxxxxxxxxxxxxxx (Steven
Cheng [MSFT]) wrote:

Hi Dave,

Regarding on the error "Namespace manager or XsltContext needed." you
encountered, it is due to the "ends-with" function is not a standard
function in XPATH 1.0.( it is in XPATH 2.0). Currently, .net framework XML
components only implemented XPATH 1.0 and XSLT 1.0 function set, here is
the list of supported functions:

#XPath 1.0 Functions
http://www.edankert.com/xpathfunctions.html

#4.2 String Functions
http://www.w3.org/TR/xpath#section-String-Functions

for your scenario, you may use some other built-in functions to replace the
ends-with call or define some .net custom extension functions:

============use substring to detect end of string============
private void btnQuery_Click(object sender, EventArgs e)
{
XmlDocument doc = new XmlDocument();
doc.Load(@"..\..\data.xml");


string xpath =
"/root/customers/customer[substring(./name,string-length(./name),1)='e']";

XmlNodeList nodes = doc.SelectNodes(xpath);

if (nodes != null && nodes.Count > 0)
{
foreach (XmlNode node in nodes)
MessageBox.Show(node.OuterXml);
}
}
=============================

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


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--------------------
From: David Thielen <thielen@xxxxxxxxxxxxx>
Subject: Re: Why does this XPath not work
Date: Sun, 20 Jul 2008 21:50:42 -0600


Same issue with matches()



On Sun, 20 Jul 2008 21:45:04 -0600, David Thielen
<thielen@xxxxxxxxxxxxx> wrote:

This XPath works fine:
/order/customer[(./address/@zip = 80302) and
(starts-with(./name,'J'))]

But this XPath :
/order/customer[(./address/@zip = 80302) and (ends-with(./name,'J'))]

ends-with() is standard XPath but I get the error: Namespace manager
or XsltContext needed.

??? - thanks - dave

david@at-at-at@windward.dot.dot.net
Windward Reports -- http://www.WindwardReports.com
me -- http://dave.thielen.com

Cubicle Wars - http://www.windwardreports.com/film.htm


david@at-at-at@windward.dot.dot.net
Windward Reports -- http://www.WindwardReports.com
me -- http://dave.thielen.com

Cubicle Wars - http://www.windwardreports.com/film.htm



david@at-at-at@windward.dot.dot.net
Windward Reports -- http://www.WindwardReports.com
me -- http://dave.thielen.com

Cubicle Wars - http://www.windwardreports.com/film.htm
.

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