private void HandleFrameNavigated(object sender, NavigationEventArgs e)
{
if (e.Content == _frameContentWhenOpened)
{
// Navigation to original page; close the picker page
Close();
}
else if (e.Content is ContactChooserPage)
{
_chooserPage = e.Content as ContactChooserPage;
_chooserPage.OnSelected += OnSelected;
_chooserPage.LoadContacts();
}
}
private void Close()
{
// Unhook from events
if (_frame != null)
{
_frame.Navigated -= HandleFrameNavigated;
_frame.NavigationStopped -= HandleFrameNavigationStoppedOrFailed;
_frame.NavigationFailed -= HandleFrameNavigationStoppedOrFailed;
// Restore host page transitions for the completed "popup" navigation
var frameContentWhenOpenedAsUiElement = _frameContentWhenOpened as UIElement;
if (null != frameContentWhenOpenedAsUiElement)
{
TransitionService.SetNavigationInTransition(frameContentWhenOpenedAsUiElement, _savedNavigationInTransition);
_savedNavigationInTransition = null;
TransitionService.SetNavigationOutTransition(frameContentWhenOpenedAsUiElement, _savedNavigationOutTransition);
_savedNavigationOutTransition = null;
}
_frame = null;
_frameContentWhenOpened = null;
_chooserPage = null;
}
}
