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have "absolute" xpath, want to get the node back

Posted on 2004-09-23
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Last Modified: 2010-04-15
I have loaded and xsd file into a treeview control, then saved "full path" to the node. When I reload this .xsd file later, I just want to select this particular node programatically. I have this line:

      nd = mSchemaXMLDoc.SelectSingleNode( "self::/" + mCurrentSchema.TagXPath.Replace( "\\", "/"));

wherein the string argument to SelectSingleNode evaluates to :

"self::/xs:schema/xs:element/xs:complexType/xs:attribute/xs:annotation"



giving the error: "The expression passed to this method should result in a NodeSet"

What am I doing wrong?
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Question by:sperodev
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Expert Comment

by:Razzie_
ID: 12131651
Well what it basically means is that string argument does not point to a node. A common problem of this is that you have a trailing '/' at the end of your xpath. It's hard to judge what's wrong without the xsd file.

I'd recommend you make absolutely sure the string argument evaluates to "self::/xs:schema/xs:element/xs:complexType/xs:attribute/xs:annotation" and if it matches the xpath in your document.
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Author Comment

by:sperodev
ID: 12147200
Sorry, this wasn't a great deal of help.  The crux of the matter had more to do with those xs:'s being part of a schema. Thanks, anyway, though.
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Author Comment

by:sperodev
ID: 12147205
Sorry, I meant part of a namespace.
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Accepted Solution

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Razzie_ earned 900 total points
ID: 12147835
Hmm ok well it's hard without your xml and namespace file because I can't see the structure, but shouldn't it be more like nd = mSchemaXMLDoc.SelectSingleNode( "//self:" + mCurrentSchema.TagXPath.Replace( "\\", "/")); ?
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