Controls rendered before body when using base class?

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I have a web form with 2 user controls on it (UC1 and UC2). Each control has a bound datagrid with textboxes in the footer to add a new row. There are also requiredfieldvalidators in each footer. When I try to add a new row to UC1 the requiredfieldvalidators for UC2 fire and therefore the page is not posted. If I remove one control, everything works fine. I have 2 questions. 1. How can I get the validators for each control to only...

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