Mastering Design Patterns in C# and ASP.NET Core
Part 3.5 – Facade Design Pattern
Series: Design Patterns in C# and ASP.NET Core
Pattern Category: Structural Design Pattern
Difficulty: ⭐⭐⭐☆☆ (Intermediate)
Prerequisites: OOP Concepts, Classes, Interfaces, Dependency Injection, SOLID Principles
Table of Contents
Introduction
What is the Facade Design Pattern?
Why Do We Need the Facade Pattern?
The Problem with Complex Subsystems
Real-World Analogy
Facade Pattern Structure
UML Class Diagram
Components of the Facade Pattern
Complete C# Console Application
ASP.NET Core Implementation
Real-World Banking Example
E-Commerce Checkout Example
Advantages