Lars Wilhelmsen » Annoyance http://www.larswilhelmsen.com Computer Software Guy Living Between the Edge and Corner Cases Wed, 11 Jan 2012 13:05:06 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 LINQ to XML: XPathSelectElement Annoyance http://www.larswilhelmsen.com/2008/12/12/linq-to-xml-xpathselectelement-annoyance/ http://www.larswilhelmsen.com/2008/12/12/linq-to-xml-xpathselectelement-annoyance/#comments Fri, 12 Dec 2008 14:08:23 +0000 larsw http://larsw.wordpress.com/2008/12/12/linq-to-xml-xpathselectelement-annoyance/ It may be me – since I’m no XPath (or XSLT) pro, but the following is in my book a bug – or at least an annoyance category 3:

Given the following XML document loaded into an XDocument:

<?xml version="1.0" encoding="utf-8"?>
<Elements>
  <Element Id="1" />
  <Element Id="2" />
  <Element Id="3" />
  <Element Id="4" />
  <Element Id="5" />
</Elements>

The following XPath should  yield the first element of the list:

"//Element[@Id = '1']"


Guess what? If use the .XPathSelectElement() extension method, the result will be null – nada!

"//Element[@Id='1']"


The same query without the whitespace around the equal sign will give you the right result.

If you’re an XPath pro I would like your opinion on the matter – or else I’m turning this issue over to http://connect.microsoft.com/

Sigh.

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