Abstract Factory Pattern in C# – Step-by-Step Tutorial (Using My Project)

In this tutorial, I’ll explain how I implemented the Abstract Factory Pattern in C# using my project:

GitHub Repository: https://github.com/stevsharp/AbstractFactoryDemo

This project demonstrates how to support multiple database providers like:

SQL Server

MySQL

Each database needs related objects such as:

Database Connection

Database Command

Instead of hardcoding these objects directly, we use the Abstract Factory Pattern to make the code cleaner and scalable.

Step 1: The Problem

Imagine your application supports multiple databases.

Without using Abstract Factory, your code may look like this:

if ( databaseType == "SQL" ) { var connection = new SqlConnection (); var command = new SqlCommand (); } else { var connection = new MySqlConnection (); var command = new MySqlCommand (); }

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Why this is bad:

Too many if/else statements

Hard to maintain

Difficult to scale

Tight coupling…