https://learn.microsoft.com/es-es/dotnet/api/system.windows.application.onfragmentnavigation?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
Application.OnFragmentNavigation(FragmentNavigationEventArgs) Method (System.Windows) | Microsoft...
Raises the FragmentNavigation event.
applicationmethodsystemwindowsmicrosoft