What is the reason PredictFocus() not supporting FocusNavigationDirection.Next ? And how can I get the element to receive focus on hitting TAB?
PredictFocus()
FocusNavigationDirection.Next
Only Up / Down / Left / Right values are supported . Further, Previous, First, Last are not valid for PredictFocus (but they are legal for MoveFocus ).
PredictFocus
MoveFocus
FrameworkElement.PredictFocus method