FrameworkElement.PredictFocus Method (FocusNavigationDirection)
Determines the next element that would receive focus relative to this element for a provided focus movement direction, but does not actually move the focus.
Assembly: PresentationFramework (in PresentationFramework.dll)
public override sealed DependencyObject PredictFocus( FocusNavigationDirection direction )
The direction for which a prospective focus change should be determined.
Return ValueType: System.Windows.DependencyObject
The next element that focus would move to if focus were actually traversed. May return null if focus cannot be moved relative to this element for the provided direction.
The following example implements a handler that handles several possible button inputs, each button representing a possible FocusNavigationDirection. The handler tracks the element with current keyboard focus, and calls on that element, and specifies the appropriate FocusNavigationDirection as initialization for the TraversalRequest type parameter provided. Instead of moving to that element as MoveFocus would do, the handler changes the physical dimensions of the predicted focus destination for visualization purposes.
Available since 3.0