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parse xml document with multiple namespaces

Posted on 2009-05-06
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Last Modified: 2013-12-17
I am a rookie at XML and need help. Using C#, Visual studio 2008.
A sample xml document is attached.
I am attempting to parse an XML document with multiple name spaces.
In the attached code snippet I attempt to use : SelectSingleNode() to get the value of  'sequenceNumber' from the 'apcm:Property' node.

wnode = feedDoc.SelectSingleNode("//apcm:Property[@Name='sequenceNumber']", nsmgr);

This returns null.

The next call to 'SelectSingleNode' to get the 'ap:updated' value is successful.
There are several other nodes with the  'apcm:' prefix and I can't seem to parse any of them.
Can anyone help!
feedDoc.Save("C:\\AP_WebFeed\\myAPItemList.xml"); // save original 
 
XmlNamespaceManager nsmgr = new XmlNamespaceManager(feedDoc.NameTable);
nsmgr.AddNamespace("ap","http://www.w3.org/2005/Atom");
nsmgr.AddNamespace("apcm","http://ap.org/scemas/03/2005/apcm");
nsmgr.AddNamespace("apnm","http://ap.org/scemas/03/2005/apnm");
 
XmlNode wnode = null;
 
wnode = feedDoc.SelectSingleNode("//apcm:Property[@Name='sequenceNumber']", nsmgr); // returns null
 
if (wnode != null)
    Globals.m_SequenceNumber = wnode.Attributes["Id"].Value;
 
wnode = feedDoc.SelectSingleNode("//ap:updated", nsmgr); // success
 
if (wnode != null)
    Globals.m_Updated = wnode.InnerText;

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ap-xml-sample.txt
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Question by:ogdennews
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Expert Comment

by:MogalManic
ID: 24324121
try wnode = feedDoc.SelectSingleNode("//apcm:Property[@apcm:Name='sequenceNumber']", nsmgr);

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Author Comment

by:ogdennews
ID: 24325175
I ttied:
wnode = feedDoc.SelectSingleNode("//apcm:Property[@apcm:Name='sequenceNumber']", nsmgr);

This also returns null
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LVL 21

Accepted Solution

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MogalManic earned 500 total points
ID: 24325476
You misspelled the namespace.  It should be
  nsmgr.AddNamespace("apcm", "http://ap.org/schemas/03/2005/apcm");
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Author Comment

by:ogdennews
ID: 24325745
Damn, that fixed it.

I've been looking at that for 2 days.
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