using namespace in xpath for SelectSingleNode

[Angela]

I am getting an error when I attempt to access a node with
SelectSingleNod e(): "The expression passed to this method should result in a
NodeSet." I understand there is some confusion when you have to state a
namespace in the xpath. Can the node be accessible by the xpath specified?
Thanks.



XmlDocument xmldoc = new XmlDocument();

XmlCDataSection cdata = xmldoc.CreateCD ataSection(requ estString);



String soapEnvelope =

"<SOAP-ENV:Envelope
xmlns:SOAP-ENV=\"http://schemas.xmlsoap .org/soap/envelope/\"

xmlns:xsi=\"htt p://wwww3.org/1999/XMLSchema-instance\"

xmlns:xsd\"http ://www.w3.org/1999/XMLSchema\">

<SOAP-ENV:Body>

<m:submit xmlns:m=\"com.a bc.def\">

<parameter1>TES T</parameter1>

<parameter2></parameter2>

</m:submit>

</SOAP-ENV:Body>

</SOAP-ENV:Envelope>";

xmldoc.LoadXml( soapEnvelope);



XmlNode xmlnode =
xmldoc.Document Element.SelectS ingleNode("SOAP-ENV:Envelope/SOAP-ENV:Body/m:submit/parameter2/");

xmlnode.AppendC hild(cdata);

[Martin Honnen]

Re: using namespace in xpath for SelectSingleNod e



Angela wrote:
[color=blue]
> I am getting an error when I attempt to access a node with
> SelectSingleNod e(): "The expression passed to this method should result in a
> NodeSet." I understand there is some confusion when you have to state a
> namespace in the xpath. Can the node be accessible by the xpath specified?[/color]
[color=blue]
> XmlDocument xmldoc = new XmlDocument();
>
> XmlCDataSection cdata = xmldoc.CreateCD ataSection(requ estString);
>
>
>
> String soapEnvelope =
>
> "<SOAP-ENV:Envelope
> xmlns:SOAP-ENV=\"http://schemas.xmlsoap .org/soap/envelope/\"
>
> xmlns:xsi=\"htt p://wwww3.org/1999/XMLSchema-instance\"
>
> xmlns:xsd\"http ://www.w3.org/1999/XMLSchema\">
>
> <SOAP-ENV:Body>
>
> <m:submit xmlns:m=\"com.a bc.def\">
>
> <parameter1>TES T</parameter1>
>
> <parameter2></parameter2>
>
> </m:submit>
>
> </SOAP-ENV:Body>
>
> </SOAP-ENV:Envelope>";
>
> xmldoc.LoadXml( soapEnvelope);
>[/color]

You should create and use a namespace manager e.g.
XmlNamespaceMan ager namespaceManage r = new
XmlNamespaceMan ager(xmldoc.Nam eTable);
then add the namespaces you need e.g.
namespaceManage r.Add("SOAP-ENV",
"http://schemas.xmlsoap .org/soap/envelope");
namespaceManage r.Add("m", "com.abc.de f");
then pass the namespace manager to the SelectSingleNod e method[color=blue]
> XmlNode xmlnode =
> xmldoc.Document Element.SelectS ingleNode("SOAP-ENV:Envelope/SOAP-ENV:Body/m:submit/parameter2/");[/color]

xmldoc.Document Element.SelectS ingleNode(xpath Expression,
namespaceManage r)

--

Martin Honnen --- MVP XML

http://JavaScript.FAQTs.com/