using System;

using System.Collections.Generic;

using Microsoft.Extensions.DependencyInjection;                 

​

var services = new ServiceCollection();

services.AddScoped<IValidator<object, Cat>, MyClass<object, Cat>>();

services.AddScoped<IValidator<object, Dog>, MyClass<object, Dog>>();

services.AddScoped<IValidator<Cat, Dog>, MyClass<Cat, Dog>>();

​

var sp = services.BuildServiceProvider();

using (var scope = sp.CreateScope())

{

    var validators = scope.ServiceProvider.GetService<IEnumerable<IValidator<object, Cat>>>();

}

​

​

public interface IValidator<in TModel, in TContext>;

​

class MyClass<TModel, TContext> : IValidator<TModel,  TContext>

{

    public MyClass()

    {

        Console.WriteLine($"MyClass: {typeof(TModel)} - {typeof(TContext)}");

    }

}

​

public class Dog 

{

}

​

public class Cat 

{

}

​