Associate Key-Value pair with textBox autoComplete extender

How do I associate a Key-Va开发者_如何学运维lue pair with textBox autoComplete extender in a way similar to a dropdownlist?

It is preferred that value will not be visible to user.

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Here is a great article on the subject http://www.codeproject.com/KB/ajax/autosuggestextender.aspx

I've also written a follow-up article explaining how to call an asynchronous server side auto post back event on a user's selection: http://www.codeproject.com/KB/webforms/PostbackAutoCompleteExten.aspx