VB.NET XML Processing a XMLNodeList with Namespace

Ok, that answers 1 and 2 somewhat, but how about 3. Lets say i have the Node selected via

Dim thisNode As XmlNode = m_nodelist(temp).SelectSingleNode("ns:RoutingInfo", nsmgr)

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The node looks like this

<RoutingInfo>
<RequestedAddr type="unknown">17145551212</RequestedAddr>
<DestAddr type="e164">+17145551212</DestAddr>
<RoutedAddr type="national">7145551212</RoutedAddr>
<CallingPartyRoutedAddr type="national">7145551212</CallingPartyRoutedAddr>
<CallingPartyOrigAddr type="national">7145551212</CallingPartyOrigAddr>
</RoutingInfo>

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How can i get the Attribute (Type) and Value for <RoutedAddr>

type=thisNode.SelectSingleNode("//RouteAddr[@type]")
val=thisNode.SelectSingleNode("//RouteAddr").InnerText

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This code seems to not work for doc with name space... it returns nothing

What if you add namespaces?

type=thisNode.SelectSingleNode("//ns:RouteAddr[@type]",, nsmgr)
val=thisNode.SelectSingleNode("//ns:RouteAddr", , nsmgr).InnerText

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Still doesn't work, here is the code i used to test this code.. I also included sample data

    Dim m_xmld As XmlDocument
        Dim m_nodelist As XmlNodeList
        Dim m_node As XmlElement
        Try




            'Create the XML Document
            m_xmld = New XmlDocument()
            'Load the Xml file
            m_xmld.Load("C:\Documents\sample2.xml")

            '' Added these two lines
            Dim nsmgr = New XmlNamespaceManager(m_xmld.NameTable)
            nsmgr.AddNamespace("ns", "http://www.metaswitch.com/cfs/billing/V1.0")

            'Get the list of name nodes
            '' Modified your XPath and added the second parameter 
            m_nodelist = m_xmld.SelectNodes("/ns:File/ns:CDRs/ns:Call", nsmgr)
            'Loop through the nodes

            For temp As Integer = 0 To m_nodelist.Count - 1

                MsgBox(m_nodelist(temp).Attributes.GetNamedItem("seqnum").Value)

                Dim thisNode As XmlNode = m_nodelist(temp).SelectSingleNode("ns:RoutingInfo", nsmgr)


                If thisNode Is Nothing Then

                Else

                    MsgBox(thisNode.OuterXml)
                    MsgBox(thisNode.SelectSingleNode("//ns:RouteAddr[@type]", nsmgr))
                    MsgBox(thisNode.SelectSingleNode("//ns:RouteAddr", nsmgr).InnerText)

                End If

                For Each childnode As XmlNode In m_nodelist(temp)
                    MsgBox(childnode.Name)
                Next

            Next


            MsgBox(m_nodelist.Count)
        Catch ex As Exception
            Throw New Exception("Failed to load xml content. " & ex.Message)
        End Try

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sample2.xml

What error are you getting and in what line?

If you run the code, there is no error . The problem is it does not return any of the values of those nodes. So we never get any data for the routeaddr

I know what the issue is. Replace the following lines:

nsmgr.AddNamespace("ns", "http://www.metaswitch.com/cfs/billing/V1.0")

            'Get the list of name nodes
            '' Modified your XPath and added the second parameter 
            m_nodelist = m_xmld.SelectNodes("/ns:File/ns:CDRs/ns:Call", nsmgr)

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with

nsmgr.AddNamespace("xsi", "http://www.metaswitch.com/cfs/billing/V1.0")

            'Get the list of name nodes
            '' Modified your XPath and added the second parameter 
            m_nodelist = m_xmld.SelectNodes("//xsi:Call", nsmgr)

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You just used incorrect namespace

that has no impact at all still returns the empty value. in both case the innerXML and OuterXML for the node is the same before changing your code and after

"<RequestedAddr type=""unknown"" xmlns=""http://www.metaswitch.com/cfs/billing/V1.0"">12095551212</RequestedAddr><DestAddr type=""e164"" xmlns=""http://www.metaswitch.com/cfs/billing/V1.0"">+12095551212</DestAddr><RoutedAddr type=""national"" xmlns=""http://www.metaswitch.com/cfs/billing/V1.0"">2095551212</RoutedAddr><CallingPartyRoutedAddr type=""national"" xmlns=""http://www.metaswitch.com/cfs/billing/V1.0"">2095551212</CallingPartyRoutedAddr><CallingPartyOrigAddr type=""national"" xmlns=""http://www.metaswitch.com/cfs/billing/V1.0"">2095551212</CallingPartyOrigAddr>"

           OuterXml      
<RoutingInfo xmlns=""http://www.metaswitch.com/cfs/billing/V1.0""><RequestedAddr type=""unknown"">12095551212</RequestedAddr><DestAddr type=""e164"">+12095551212</DestAddr><RoutedAddr type=""national"">2095551212</RoutedAddr><CallingPartyRoutedAddr type=""national"">2095551212</CallingPartyRoutedAddr><CallingPartyOrigAddr type=""national"">2095551212</CallingPartyOrigAddr></RoutingInfo>"      String

I tire dit on a sample file you have sent me. This looks very different

Ok, i got a bit further and found one problem which was a typo on my side i had one of the node names wrong / missing the "d" in RoutedAddr. After fixing that and resetting my code to the original i get now the inner Text of   "thisNode.SelectSingleNode("ns:RoutedAddr", nsmgr).InnerText" but the "thisNode.SelectSingleNode("ns:RoutedAddr[@type]", nsmgr).Value' still returns a blank value even so i have a value in the XML file

change it to:

thisNode.SelectSingleNode("//ns:RoutedAddr[@type]", nsmgr).Value

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Still nothing, both return blank

Wow, finaly we figured out this beast..
It returns now the correct value for Type
Thanks