using System;

using System.Collections.Generic;

using System.Linq;

using System.Reflection;

​

namespace Test

{

    public interface IEntityModelBuilder<out T> where T : IEntity { }

    public interface IEntity { }

    public class Entity1 : IEntity { }

    public class Entity2 : IEntity { }

​

    public class BaseClass1 : IEntityModelBuilder<Entity1>

    {        

        public BaseClass1(int a)

        {            

        }

    }

    public class BaseClass2 : IEntityModelBuilder<Entity2>

    {

        public BaseClass2(int a) { }

    }

​

​

    public class Program

    {

        public static void Main(string[] args)

        {

            List<IEntityModelBuilder<IEntity>> objects = Assembly.GetExecutingAssembly().GetTypes()

                .Where(x => x.GetInterfaces().Any(y => y.IsGenericType && y.Name == "IEntityModelBuilder`1"))

                .Select(x => (IEntityModelBuilder<IEntity>)Activator.CreateInstance(x, new object[] { 0 })).ToList();

            objects.ForEach(x => Console.WriteLine(x.GetType().Name));

        }

    }

}