依赖注入：无法从“服务”转换为“ System.Type”

Question

我正在尝试在“启动类”中添加范围，但由于某些原因，我会收到此错误。

  

无法从“服务”转换为“ System.Type”

     

无法从“ Iservice”转换为“ System.Type”

我还检查了是否在所有其他类中正确注入了服务。

这是代码

public class Startup
{
    private readonly IService Iservice;
    private readonly Service service;

    public Startup(IConfiguration configuration, IService Iservice, Service service)
    {
        Configuration = configuration;
        this.Iservice = Iservice;
        this.service = service;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.Configure<CookiePolicyOptions>(options =>
        {
            // This lambda determines whether user consent for non-essential cookies is needed for a given request.
            options.CheckConsentNeeded = context => true;
            options.MinimumSameSitePolicy = SameSiteMode.None;
        });

        services.AddDbContext<DbContext>(options =>
        options.UseSqlServer(Configuration.GetConnectionString("Connectionstring")));

        services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);

       // This is where I get the error
        services.AddScoped(Iservice, service);
    }

这似乎是一个初学者的问题，所以很抱歉。