"Mike" wrote:

> Hi,
>
> I'm a complete newbie to XML and am needing to rush through a job requiring
> far more knowledge than I have the time to gather.
>
> Basically... I need to build a breadcrumb menu for our website, using a
> passed URL and an XML menu string, what has been retrieved from an SQL server
> (we need to support no-script clients, hence the use of the request URL).
>
> Essentially I need to do the following::
>
> - Search the XML string to find nodes where an attribute contains the
> absolutepath of the passed URL.
> eg PassedURL = "http://www.mysite.com/Default.aspx?dept=main&info=new"
> AbsolutePath="/Default.aspx"
> Find nodes like <item href="/Default.aspx?dept=main&content=old" />
>
> - Do a test on the full attribute value to see if it's the one I'm really
> looking for.
> eg Compare the passed querystring args to the attribute's args (they
> might not be in the same order, so I need to test the args individually).
>
> - If it is the one I'm looking for, then gather up it and all it's
> ancestors, to build a breadcrumb menu
>
> - If it's not... search for the next node.
>
> Being a menu, the structure is multi-level, and <item href="value" /> nodes
> can appear at all levels... and I have no way of knowing how they got
> there... I need to search the menu, find the entry for the node they chose,
> and then back-track to build up the href items of all the ancestor nodes.
>
> So far, I've worked out that I need to be using XPath, and have worked out
> how to get the XML string into an XPathDocument
>
> XPathDocument xml_PathDoc = new XPathDocument(new StringReader((string)
> xml_String));
>
> and then I THINK that I need to use an Navigator like this...
>
> XPathNavigator xmlPathNav = xml_PathDoc.CreateNavigator();
>
> The test part I'm obvioulsy OK with... that's just simple string work... but
> the search, find and then gather ancestors... I'm totally lost.
>
> It's taken me a day to get this far... and I have people screaming at me to
> get the thing working.
>
> Much appreciate any assistance, hints or links thrown my way.
>
> Cheers,
>