SelectSingleNode Issue

4 Jul 2006 9:18 PM

Bob Mixon [SPS MVP]

All,

There are so many newsgroups these days, I am not sure if this is the correct
one I should be posting to; if not, I apoligize!

I have the following xml file, this was generated by the .NET disco.exe utility.

<?xml version="1.0" encoding="utf-8"?>
<discovery xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://schemas.xmlsoap.org/disco/">
<contractRef ref="http://sps2003:81/Services/AdGroupsList/AdGroupsList.asmx?wsdl"
docRef="http://sps2003:81/Services/AdGroupsList/AdGroupsList.asmx" xmlns="http://schemas.xmlsoap.org/disco/scl/"
/>
<soap address="http://sps2003:81/Services/AdGroupsList/AdGroupsList.asmx"
xmlns:q1="http://tempuri.org/" binding="q1:AdGroupsListSoap" xmlns="http://schemas.xmlsoap.org/disco/soap/"
/>
</discovery>

I am having a difficult time setting up the NamespaceManager and making the
SelectSingleNode call correctly to return the <contractRef> element. Can
someone please provide me with an example? Here is what I have so far:

XmlNamespaceManager nm = new XmlNamespaceManager( doc.NameTable );

nm.AddNamespace( "xsd", "http://www.w3.org/2001/XMLSchema" );
nm.AddNamespace( "xsi", "http://www.w3.org/2001/XMLSchema-instance" );

XmlElement discoveryElem = doc.DocumentElement;
XmlNode node = discoveryElem.SelectSingleNode( "//contractRef", nm );

The node variable always returns null.

Thank you in advance for all of the help!

----------------------------------------------------------
Bob Mixon
Managing Director
ShareSquared, Inc. - Your Knowledge Management Experts!
http://www.ShareSquared.com

Microsoft SharePoint Portal Server MVP
(Blog) http://bobmixon.xwiki.com
----------------------------------------------------------

5 Jul 2006 12:23 AM

Jon Skeet [C# MVP]

Bob Mixon [SPS MVP] <bob.mi***@gmail.com> wrote:

<snip>

> I am having a difficult time setting up the NamespaceManager and making the
> SelectSingleNode call correctly to return the <contractRef> element. Can
> someone please provide me with an example? Here is what I have so far:
>
> XmlNamespaceManager nm = new XmlNamespaceManager( doc.NameTable );
> nm.AddNamespace( "xsd", "http://www.w3.org/2001/XMLSchema" );
> nm.AddNamespace( "xsi", "http://www.w3.org/2001/XMLSchema-instance" );
> XmlElement discoveryElem = doc.DocumentElement;
> XmlNode node = discoveryElem.SelectSingleNode( "//contractRef", nm );
>
> The node variable always returns null.
>
> Thank you in advance for all of the help!

You need the namespace for the contractRef element:

nm.AddNamespace( "scl", "http://schemas.xmlsoap.org/disco/scl/");
....

XmlNode node = discoveryElem.SelectSingleNode("//scl:contractRef", nm);

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

5 Jul 2006 7:40 AM

Bob Mixon [SPS MVP]

Thank you Jon, I really appreciate it!

----------------------------------------------------------
Bob Mixon
Managing Director
ShareSquared, Inc. - Your Knowledge Management Experts!
http://www.ShareSquared.com

Microsoft SharePoint Portal Server MVP
(Blog) http://bobmixon.xwiki.com
----------------------------------------------------------

Show quote

> Bob Mixon [SPS MVP] <bob.mi***@gmail.com> wrote:
>
> <snip>
>
>> I am having a difficult time setting up the NamespaceManager and
>> making the SelectSingleNode call correctly to return the
>> <contractRef> element. Can someone please provide me with an
>> example? Here is what I have so far:
>>
>> XmlNamespaceManager nm = new XmlNamespaceManager( doc.NameTable );
>> nm.AddNamespace( "xsd", "http://www.w3.org/2001/XMLSchema" );
>> nm.AddNamespace( "xsi", "http://www.w3.org/2001/XMLSchema-instance"
>> );
>> XmlElement discoveryElem = doc.DocumentElement;
>> XmlNode node = discoveryElem.SelectSingleNode( "//contractRef", nm );
>> The node variable always returns null.
>>
>> Thank you in advance for all of the help!
>>
> You need the namespace for the contractRef element:
>
> nm.AddNamespace( "scl", "http://schemas.xmlsoap.org/disco/scl/");
> ...
> XmlNode node = discoveryElem.SelectSingleNode("//scl:contractRef",
> nm);