Reading node in XML file with namespace?

[Sharon]

I'm trying to navigate inside an XML file that has a very simple namespace,
But when I'm using the name space a get nothing (Count == 0) when I do
SelectNodes() or SelectSingleNod e() (null).
When I remove the namespace from the XML file and from the code --> the
Select is successful but I do need to leave the namespace in the XML file.

Here is the XML file I'm using:
<?xml version="1.0" standalone="yes "?>
<MyDB xmlns="DataBase .xsd">
<Subjects>
<Subject>
<ID>Cylinder</ID>
<Defects>
<Defect>
<ID>100</ID>
<Sevirity>10</Sevirity>
</Defect>
<Defect>
<ID>101</ID>
<Sevirity>20</Sevirity>
</Defect>
<Defect>
<ID>102</ID>
<Sevirity>30</Sevirity>
</Defect>
</Defects>
</Subject>
</Subjects>
</MyDB>

And the code using DOM:
XmlDocument doc = new XmlDocument();
doc.Load("EvsDB Output.xml");
XmlNamespaceMan ager nsmgr = new XmlNamespaceMan ager(doc.NameTa ble);
nsmgr.AddNamesp ace("ns", "DataBase.xsd") ;
// or // nsmgr.AddNamesp ace("", "DataBase.xsd") ;

XmlNode node = doc.SelectSingl eNode("EvsDB/Subjects", nsmgr); // return null
XmlNodeList listSubjects = doc.SelectNodes ("/EvsDB/Subjects", nsmgr); //
return listSubjects.Co unt == 0
XmlNodeList listSubject = doc.SelectNodes ("/EvsDB/Subjects/Subject", nsmgr);
// return listSubject.Cou nt == 0
XmlNodeList listDefect =
doc.SelectNodes ("/EvsDB/Subjects/Subject/Defects/Defect", nsmgr); // return
listDefect.Coun t == 0


Can anybody tell hove to make it work?



--------
Thanks
Sharon

[Andy]

Re: Reading node in XML file with namespace?

If you go with the ("ns", "DataBase.x sd") manager, you'll need to
prefix ns: before all of your nodes. For example:

XmlNode node = doc.SelectSingl eNode("ns:EvsDB/ns:Subjects", nsmgr);

BTW, i haven't had any luck trying to specify the default namespace...i
still end up with null nodes. So just assign a prefix and remember to
use that prefix throughout.

HTH
andy

[Sharon]

Re: Reading node in XML file with namespace?

It works, thanks a lot.

BTW: To set a default namespcae, simply do something like:
XmlNamespaceMan ager nsmgr = new XmlNamespaceMan ager(doc.NameTa ble);
nsmgr.AddNamesp ace("", "DataBase.xsd") ;

--------
Thanks again
Sharon


"Andy" wrote:
[color=blue]
> If you go with the ("ns", "DataBase.x sd") manager, you'll need to
> prefix ns: before all of your nodes. For example:
>
> XmlNode node = doc.SelectSingl eNode("ns:EvsDB/ns:Subjects", nsmgr);
>
> BTW, i haven't had any luck trying to specify the default namespace...i
> still end up with null nodes. So just assign a prefix and remember to
> use that prefix throughout.
>
> HTH
> andy
>
>[/color]

[Martin Honnen]

Re: Reading node in XML file with namespace?



Sharon wrote:

[color=blue]
> BTW: To set a default namespcae, simply do something like:
> XmlNamespaceMan ager nsmgr = new XmlNamespaceMan ager(doc.NameTa ble);
> nsmgr.AddNamesp ace("", "DataBase.xsd") ;[/color]

No, that does not help, for the XPath expression you need to bind a
prefix to the default namespace URI if you want to select elements, see
<http://www.faqts.com/knowledge_base/view.phtml/aid/34022/fid/616>

--

Martin Honnen --- MVP XML

http://JavaScript.FAQTs.com/