Search databinded listboxitem from XmlNode

I'm working on a c# wpf app in which I databind a listbox control to an xml datasource. Now I know that I can find the 开发者_运维技巧XmlNode that is linked to a listboxitem using datacontext. But now I want to go the other way around: Find the associated listboxitem when I have an xmlnode..

Any advice?

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What about :

for each listboxitem, you retrieve the XmlNode, then, you use .Equals() on the node you have...