# Thursday, April 10, 2008
Thanks to one of the other SoftSource guys here (yay, Ben!) we got the problem resolved.  Turns out if was also a problem under VS 2005, but only sometimes and nobody noticed.  Huh.  Anyway, there was a bit in the base page that was creating a control dynamically and inserting it into the control hierarchy.  In order to find out where it was supposed to go, it was recursively traversing the control hierarchy looking for the right one, before LoadViewState.  This causes the repeater to be created too early, and when ViewState comes along, it sees the control has already been created and so does nothing. 

This goes to show once again, just don't mess with the control hierarchy.  Nothing good can come of it.  Even better, just don't use repeaters and come up with a better way of doing things.  I'm finally doing some "real" Ajax using client side JavaScript to make asynchronous callbacks.  Sooooo much better than using update panels.  Yes, it requires writing JavaScript (of which I'm mildly scared) but it turns out to be pretty easy, and the pages are not only much more responsive, but much more deterministic in their behavior.  We're now essentially only rendering the full page once, then making all the changes client side.  The programming model is a bit harder, but the results are worth it.

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