namespace LearnCore.CoreDI

{

    public interface ILearnDI

    {

        string GetName(string argName);

    }

}

public class LearnDI : ILearnDI

    {

        public string GetName(string argName)

        {

            return $"我的名字是:{argName}";

        }

    }

 public void ConfigureServices(IServiceCollection services)

        {

            services.AddScoped<ILearnDI, LearnDI>();

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

        }

namespace LearnCore.CoreDI.Controllers

{

    [Route("api/[controller]")]

    [ApiController]

    public class ValuesController : ControllerBase

    {

        private readonly ILearnDI learnDI;

        public ValuesController(ILearnDI arglearnDI)

        {

            this.learnDI = arglearnDI;

        }

        [HttpGet(nameof(GetName))]

        public string GetName()

        {

            return learnDI.GetName("希望");

        }

    }

}