>Yeah of course controls neeed to be added every time - the page doesn't stay in memory it's a class that gets reloaded on every request.
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>Both viewstate and post data get reassigned on postback but it happens before Page_Load() so if ou looad controls there it's too late for them to be assigned.

I think a great improvements in the next version would be to have those added controls to be preserved. So, we wouldn't have to worry about that on postbacks.