Resolving instances with asp net core di from within configureservices

Resolving with ASP.NET Core DI from within ConfigureServices

ASP.NET Core provides a powerful dependency injection (DI) framework that allows to easily manage and resolve within their applications. One scenario is the need to resolve instances from within the ConfigureServices method in the Startup class. In this article, we will explore how to accomplish this using ASP.NET Core DI, with examples to illustrate the concepts.

, let's take a look at the basic structure of the ConfigureServices method:

public void ConfigureServices(IServiceCollection services)
    // Configure services here

Within this method, we can services and configure the DI container. However, sometimes we may need to resolve instances of services at this stage. To do this, we can use the IServiceProvider interface, is available within the ConfigureServices method.

Let's say we have a service called MyService that we want to resolve within ConfigureServices. Here's an of how we can achieve this:

In the example above, we first register MyService using the AddScoped method. This ensures that a new instance of MyService is created for each request. Then, we build the service provider using services.BuildServiceProvider(). Finally, we resolve an instance of IMyService using .

Using Scoped Services

Scoped services are a common type of service in ASP.NET Core, as they are created once per request. Let's see how we can resolve a scoped service within ConfigureServices:

In the example above, we register ScopedService as a scoped service using AddScoped. Then, we create a new scope using serviceProvider.CreateScope(). Within this scope, we can resolve the scoped service using .


Resolving instances with ASP.NET Core DI from within ConfigureServices is a powerful feature that allows developers to easily manage dependencies in their applications. By leveraging the IServiceProvider interface, we can register and resolve services within the ConfigureServices method. This enables us to have fine-grained control over the of our application's services.

Remember to always register your services before to resolve them, and make sure to dispose of any scoped services properly to avoid memory leaks. With these best practices in mind, you can confidently use ASP.NET Core DI to resolve instances within ConfigureServices and build robust and maintainable applications.

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