How to register custom usermanager etc in di asp net core 2 1


ASP.NET is a popular programming language used for building web applications. In this article, we will discuss how to register a custom UserManager in Dependency Injection (DI) in ASP.NET Core 2.1.

Understanding Dependency Injection

Dependency Injection is a design that allows the separation of the creation and usage of objects. It helps in achieving loose coupling between classes and promotes better testability and maintainability of the code.

Custom UserManager in DI

In ASP.NET Core 2.1, the default DI container is provided by Microsoft.Extensions.DependencyInjection . To register a custom UserManager, we need to follow these :

Step 1: Create a Custom UserManager

, we need to create a custom UserManager class that extends the default UserManager provided by ASP.NET Core. This class will contain any additional or customization required for our application.

public class CustomUserManager : UserManager
    // Custom implementation goes here

Step 2: Register the Custom UserManager

Next, we need to register our custom UserManager in the DI container. This can be done in the ConfigureServices of the Startup class.

public void ConfigureServices(IServiceCollection services)
    //  service registrations

    services.AddScoped, CustomUserManager>();

The AddScoped method is used to register the custom UserManager with a scoped lifetime. This means that a new instance of the UserManager will be for each HTTP request.

Step 3: Use the Custom UserManager

Finally, we can use the custom UserManager in our controllers or services by injecting it through the constructor.

public class UserController : Controller
    private readonly UserManager _userManager;

    public UserController(UserManager userManager)
        _userManager = userManager;

    // Controller 

By injecting the custom UserManager through the constructor, we can access its methods and properties within our controller.


In this article, we discussed how to register a custom UserManager in Dependency Injection in ASP.NET Core 2.1. By following the steps mentioned above, you can easily customize the UserManager and use it in your application.

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