Simon Mourier's Blog - ASP.NET Hidden Field Persistence During Life Cycle

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ASP.NET Hidden Field Persistence During Life Cycle

Sep 11, 2012 See the question and my original answer on StackOverflow

I've ripped a lot of hair on ASP.NET lifecycle :-). I would advise you this:

bind to control events
avoid binding or overriding to page events

In this case, you should have a protected HiddenField declared in your page/user control. So you really want to bind to the ValueChanged event, and forget about the rest.