C# Design Patterns

Comprehensive implementations of Gang of Four (GoF) design patterns in C#. Written in Bangla comments for Bengali-speaking developers learning OOP design patterns.

Patterns Implemented

Creational

• Abstract Factory
• Builder
• Factory Method
• Prototype
• Singleton

Structural

• Adapter
• Bridge
• Composite
• Decorator
• Facade
• Flyweight
• Proxy (via Null Object Pattern)

Behavioral

• Chain of Responsibility
• Command
• Mediator
• Memento
• Observer
• State
• Strategy
• Template Method
• Visitor

Tech Stack

• C# / .NET
• Visual Studio solution (.sln)

Prerequisites

• .NET SDK 4.x or later, or
• Visual Studio 2019+

Getting Started

Using .NET CLI

git clone https://github.com/ahasan09/csharp-design-patterns
cd csharp-design-patterns/GofPattern
dotnet build DesignPatterns.sln
dotnet run --project Singleton/

Using Visual Studio

1. Open GofPattern/DesignPatterns.sln in Visual Studio
2. Set the desired pattern project as the startup project
3. Press F5 to run

Project Structure

GofPattern/
├── Singleton/
├── FactoryMethod/
├── AbstracFactory/
├── Builder/
├── Prototype/
├── Adaptor/
├── BridgePattern/
├── CompositeDesignPattern/
├── Decorator/
├── FacadePattern/
├── FlyWeight/
├── ChainofResponsibility/
├── CommandPattern/
├── MediatorPattern/
├── Memento/
├── NullObjectPattern/
├── Observer/
├── StateDesignPattern/
├── Strategy/
├── TempletMethod/
└── VisitorDesignPattern/