Learn C# Design Patterns Step by Step in 8 hours. In this 1 hour of video we will cover simple factory, lazy loading and RIP ( Replace IF with Polymorphism) C# design patterns. Lab 1:- Design pattern step by step with a project(Factory pattern,Lazy Pattern and RIP Pattern).(60 minutes). This is this video what your are seeing. Lab 2:- Unity, Stratergy, IOC, SRP and SOC design pattern. (30 minutes) trailer video.