Also in PRISM for WPF. https://docs.microsoft.com/en-us/archive/msdn-magazine/2008/september/prism-patterns-for-building-composite-applications-with-wpf https:

Also in PRISM for WPF. https://docs.microsoft.com/en-us/archive/msdn-magazine/2008/september/prism-patterns-for-building-composite-applications-with-wpf https://docs.microsoft.com/en-us/archive/msdn-magazine/2008/...