Replace Switch Statements with the Strategy Pattern in C#

A walkthrough of replacing switch statements with the Strategy design pattern in C#, using a shipping cost calculator as the example. The tutorial covers defining an IShippingStrategy interface, implementing concrete strategy classes for FedEx, UPS, USPS, and DHL, injecting them as an IEnumerable via dependency injection, and resolving them through a dictionary in the OrderProcessor. Key benefits discussed include adherence to the Open/Closed Principle, isolated testability of each strategy, encapsulated dependencies per provider, and easy extensibility by adding new strategy classes without modifying existing code.