Navigating XML using XPath

[Boknaai]

Hi All

I'm having a problem navigating through an XML document using XPath. I've never done this before, so I'm sure the answer is fairly obvious

I am using the following code to navigate to a particular node in an xml document (VB.NET):

Dim doc As XmlDocument = New XmlDocument()
doc.Load("doc.xml&quot

Dim nd As XmlNode
Dim rt As XmlElement = doc.DocumentElement
nd = rt.SelectSingleNode("descendant:age[@PageName='default.aspx']&quot

'output text to the page, to check it is working
Label1.Text = nd.OuterXml()

This works perfectly, as long as there is no XSD document associated with my xml document. eg If I have the following lines at the top of my xml document, it doesn't work:

<?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?>
<PageList xmlns=&quot;

http://tempuri.org/doc.xsd&quot;>

....

However, if I have:

<?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?>
<PageList>
...

It does work!!

Please could somebody tell me why this is so and what I should be doing instead.

Thanks

 

[culshaja]

The attribute becomes a descendant node of the documentElement in the DOM document.

What you want to do is use the following:

nd = rt.SelectSingleNode("//Page[@PageName='default.aspx']")

If you want a direct descendant then you could use /rootnodename/Page[@PageName='default.aspx']

James James Culshaw
jculshaw@miniaturereview.co.uk

http://www.miniaturereview.co.uk

http://www.brainbench.com/transcript.jsp?pid=193305