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Re: XPath: SelectSingleNode failing to return node

From: "Joe Fawcett" <joefawcett@---------.------>
To: NULL
Date: 10/21/2008 9:05:00 AM
"Bob Barrows [MVP]" <reb01501@N...> wrote in message 
news:%23WAhsIuMJHA.2824@T......
>I have this xml which I retrieved from a Sharepoint web service:
> <Views xmlns="http://schemas.microsoft.com/sharepoint/soap/">
> <View Name="{9E45B91C-199C-4403-8331-7F6AE2A30259}" Type="HTML"
> DisplayName="All Items" Url="Lists/Incident Reports/AllItems.aspx"
> BaseViewID="1" />
> <View Name="{5C642326-44D2-4879-9E1D-B47220D88007}" DefaultView="TRUE"
> Type="HTML" DisplayName="Display" Url="Lists/Incident
> Reports/Display.aspx" BaseViewID="1" />
> <View Name="{24E44148-FEEF-4D18-8440-C21593834D28}" Type="HTML"
> Hidden="TRUE" DisplayName="" Url="default.aspx" BaseViewID="1" />
> <View Name="{0BB83D50-7EEE-40C4-B564-8478AD077FA0}" Type="HTML"
> DisplayName="Recent" Url="Lists/Incident Reports/Recent.aspx"
> BaseViewID="1" />
> <View Name="{C33294BE-E0D7-4210-B31C-91C8149242BB}" Type="HTML"
> DisplayName="Dataview" Url="Lists/Incident Reports/Dataview.aspx"
> BaseViewID="1" />
> </Views>
>
> I'm missing something obvious, but I can't figure out why this call to
> SelectSinglenode (in vb.net) fails to return the desired node:
>
>  Dim ViewNode As Xml.XmlNode =
> xmldoc.SelectSingleNode("//View[@DisplayName = ""Dataview""]")
>  sViewID = ViewNode.Attributes("Name").Value
>
> If I do it the hard way, by looping, it works fine:
>
>  For Each xNode In xmldoc.DocumentElement.ChildNodes
>   If xNode.Attributes("DisplayName").Value = "Dataview" Then
>    sViewID = xNode.Attributes("Name").Value
>    Exit For
>   End If
>  Next
>
> I'm going to move on, using the loop, but I would appreciate if someone
> can tell me what the problem in my xpath query is.
>
>
Look at http://www.dpawson.co.uk/xsl/sect2/N5536.html especially numbers 13 
and 23.
You need to use the NamespaceManager and set a prefix mapping such as 'soap' 
to "http://schemas.microsoft.com/sharepoint/soap/".
Then use the 'soap'prefix in your paths.
//soap:View[....]

-- 

Joe Fawcett (MVP - XML)

http://joe.fawcett.name




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