private void ClosePickerPage()
{
// Unhook from events
if (null != _frame)
{
_frame.Navigated -= new NavigatedEventHandler(HandleFrameNavigated);
_frame.NavigationStopped -= new NavigationStoppedEventHandler(HandleFrameNavigationStoppedOrFailed);
_frame.NavigationFailed -= new NavigationFailedEventHandler(HandleFrameNavigationStoppedOrFailed);
// Restore host page transitions for the completed "popup" navigation
UIElement frameContentWhenOpenedAsUIElement = _frameContentWhenOpened as UIElement;
if (null != frameContentWhenOpenedAsUIElement)
{
TransitionService.SetNavigationInTransition(frameContentWhenOpenedAsUIElement, _savedNavigationInTransition);
_savedNavigationInTransition = null;
TransitionService.SetNavigationOutTransition(frameContentWhenOpenedAsUIElement, _savedNavigationOutTransition);
_savedNavigationOutTransition = null;
}
_frame = null;
_frameContentWhenOpened = null;
}
// Commit the value if available
if (null != pickerPage)
{
if (pickerPage.Value.HasValue)
{
Value = pickerPage.Value.Value;
}
pickerPage = null;
}
}
private void HandleFrameNavigated(object sender, NavigationEventArgs e)
{
if (e.Content == _frameContentWhenOpened)
{
// Navigation to original page; close the picker page
ClosePickerPage();
}
else if (null == pickerPage)
{
// Navigation to a new page; capture it and push the value in
pickerPage = e.Content as IDoublePickerPage;
if (null != pickerPage)
{
pickerPage.Value = Value.GetValueOrDefault(0);
}
}
}
