>Ok.. I don't see any problems along those lines.. but Valid() does fire if I switch controls and maybe that's what it takes to get the data bound to the property. If I make the InteractiveChange()
>
>

dodefault()
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>nodefault
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>this.SetFocus()
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>
>it seems to clear up the problem.

Man, I wouldn't have thought of that! Glad you solved it. Better give yourself 3 stars.