https://learn.microsoft.com/en-us/windows/windows-app-sdk/api/winrt/microsoft.ui.xaml.media.animation.navigationtransitioninfo.setnavigationstatecore?view=windows-app-sdk-1.8
NavigationTransitionInfo.SetNavigationStateCore(String) Method (Microsoft.UI.Xaml.Media.Animation)...
When implemented in a derived class, sets the navigation state string that is passed for navigation actions through Frame.Navigate and similar API.
stringmethodmicrosoftuixaml