The requirement that you have could not be achieved if you are going to handle all the records in a single postback (AJAX request), because the HTML will be updated after all of the operations are performed on the server-side. The only thing that I could suggest is that you handle each record in a single request and display the result in a RadListView, RadGrid or a simple Repeater control and add the record results to the data source of that control (record by record on each postback).
Hope this helps.
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