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Handling namespaces in xpath queries I have an xml document that starts <?xml version="1.0" encoding="utf-8"?>     <LOGICALMODEL xmlns="urn:bt-cssschema">         <LOGICALNODE>             <VarType>DP</VarType> I want to read nodes from it using c#. If I create an xpath and read it like this: string xpathQuery = "/LOGICALMODEL/LOGICALNODE[VarType='DP']"; System.Xml.XmlNodeList list = m_xmlDoc.SelectNodes(xpathQuery); The list is empty. If I edit the xml so that it doesn't have the xmlns part, then the list gets all the nodes I would expect it to. Can anyone please tell me how I can modify the code so that it gets the logical nodes when the xmlns attribute is present in the input file? Thanks Steve Started By SteveClay on Jan 27, 2006 at 4:33:51 AM

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MHenke on Jan 27, 2006 at 5:23:57 AM (# 2) Not in C# (OTTOMH). But the behaviour is perfectly valid. All the nodes in your example belongs to the default namespace "urn:bt-cssschema", your XPath query requests nodes that are in no namespace. It should be easy to look up, a common task for all XPath supporting XML processors... ... here we go (from http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemxmlxmlnodeclassselectnodestopic1.asp): Remarks If the XPath expression requires namespace resolution, you must use the SelectNodes overload which takes an XmlNamespaceManager as its argument. The XmlNamespaceManager is used to resolve namespaces. And here it is... SteveClay on Jan 27, 2006 at 6:16:02 AM (# 3) MHenke, Thank you very much, perfect, works a treat! Thanks

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