The overall catalog is here:
https://www.cnblogs.com/fly-bird/category/1173771.html
WPF Self-study Introduction (8) Interaction between WPF Forms-Before Dusk and After Dawn-博客园
Introduction to WPF Self-study (10) A brief introduction to WPF MVVM-Before dusk and after dawn-Blog Garden https://www.cnblogs.com/fly-bird/p/8699105.html