Spring boot Autowired annotation equivalent for .net core mvc

You can use NAutowired,the field injection

There is no annotation.

You just need to make sure you register the dependency with the DI container at the composition root which is usually Startup.ConfigureServices

public void ConfigureServices(IServiceCollection services) {

    //...

    services.AddScoped<SomeContext>();

    //...
}

If in your case SomeContext is a DbContext derived class then register it as such

var connection = @"some connection string";
services.AddDbContext<SomeContext>(options => options.UseSqlServer(connection));

When resolving the controller the framework will resolve known explicit dependencies and inject them.

Reference Dependency Injection in ASP.NET Core

Reference Dependency injection into controllers

Out of the box, Microsoft.Extensions.DependencyInjection doesn't provide property setter injection (only constructor injection). However, you can achieve this by using the Quickwire NuGet package, which does all the necessary plumbing for you. It extends the ASP.NET core built-in dependency injection container to allow service registration using attributes.

To use it, first add these two lines to your ConfigureServices method:

public void ConfigureServices(IServiceCollection services)
{
    // Activate controllers using the dependency injection container
    services.AddControllers().AddControllersAsServices();
    // Detect services declared using the [RegisterService] attribute
    services.ScanCurrentAssembly();

    // Register other services...
}

Then simply decorate your controller with the [RegisterService] attribute, and decorate any property to autowire with [InjectService]:

[Route("api/[controller]")]
[RegisterService(ServiceLifetime.Transient)]
public class SomeController : Controller
{
    [InjectService]
    private SomeContext SomeContext { get; init; }
}

Now SomeContext will automagically get injected with the corresponding registered service without having to go through the constructor song and dance.

For more information, you can also check out this table that maps out which Quickwire attribute corresponds to which Spring Boot annotation.