private void UnloadedHandler(object sender, RoutedEventArgs e)
{
if (splitView != null)
{
splitView.UnregisterPropertyChangedCallback(SplitView.DisplayModeProperty, displayModePropertyChangedToken);
splitView.UnregisterPropertyChangedCallback(SplitView.IsPaneOpenProperty, isPaneOpenPropertyChangedToken);
}
splitView = null;
unloadedTaskSource.SetResult(null);
}
private async void LoadedHandler(object sender, RoutedEventArgs e)
{
// Workaround because the Windows Runtime does not guarantee that first the Unloaded handler is called before the second Loaded handler comes.
await unloadedTaskSource.Task;
unloadedTaskSource = new TaskCompletionSource <object>();
splitView = GetAncestor <NavigationSplitView>(this);
if (splitView != null)
{
displayModePropertyChangedToken = splitView.RegisterPropertyChangedCallback(SplitView.DisplayModeProperty, SplitViewDisplayModeChanged);
isPaneOpenPropertyChangedToken = splitView.RegisterPropertyChangedCallback(SplitView.IsPaneOpenProperty, SplitViewIsPaneOpenChanged);
}
UpdateContentPresenterPadding();
}
