Using factory pattern with asp net core dependency injection


ASP.NET is a popular programming language used for building web . One of the key of ASP.NET is its for dependency injection, which allows for the use of the pattern. In this article, we will explore how to use the factory pattern with ASP.NET Core dependency injection.

What is the Factory Pattern?

The factory pattern is a creational design pattern that provides an interface for objects, but allows subclasses to decide which to instantiate. This pattern is useful when there is a need to create multiple objects of similar , but with different implementations.

Using the Factory Pattern with ASP.NET Core Dependency Injection

ASP.NET Core provides built-in support for dependency injection, which makes it easy to implement the factory pattern. To use the factory pattern with ASP.NET Core, follow these steps:

Step 1: Define the Factory Interface

The first step is to define an interface that represents the factory. This interface a method that returns the desired object. For example:

public interface IMyFactory
    IMyObject Create();

Step 2: Implement the Factory

Next, implement the factory interface in a concrete class. This class will be responsible for creating instances of the desired object. For example:

public class MyFactory : IMyFactory
    public IMyObject Create()
        return new MyObject();

Step 3: the Factory with Dependency Injection

Now, register the factory with the ASP.NET Core dependency injection container. This can be done in the ConfigureServices method of the Startup class. For example:

Step 4: Use the Factory in Your Code

Finally, you can use the factory in your code by injecting it into the desired class. For example:

public class MyController : Controller
    private readonly IMyFactory _myFactory;

    public MyController(IMyFactory myFactory)
        _myFactory = myFactory;

    public IActionResult Index()
        IMyObject myObject = _myFactory.Create();
        // Use myObject as needed
        return View();


The factory pattern is a powerful tool for creating objects with different implementations. By using the factory pattern with ASP.NET Core dependency injection, you can easily switch between different implementations of an object without modifying your code. This promotes flexibility and maintainability in your ASP.NET applications.

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