Just the idea: you can choose to remove auto postback and write explicit Ajax post in your handler of your
If this is your scenario, it can be quite reasonable; this is what Ajax is actually used for. At the same time, I would advise you to review it, as the event
can be too frequent. You need to consider performance cost of the exchange with the server on each event. Overuse of Ajax is actually a curse of many present-days site: developers make them actually working, but they don't care about how much it costs due to wildly redundant traffic use.