using System;

using System.IO;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var c = new MyContainer<MyEnum>();

        c.MyProp = new SomeClass<MyEnum, MyImplementation>();

    }

​

    public enum MyEnum

    {

        val1,

        val2

    }

​

    ;

    public interface ISomeClass<TEnum, out S>

    {

        TEnum Dim

        {

            get;

        }

​

        IEnumerable<S> Inc

        {

            get;

        }

    }

​

    public interface IMyInterface

    {

    }

​

    public class SomeClass<TEnum, S> : ISomeClass<TEnum, S> where TEnum : struct, IConvertible where S : IMyInterface

    {

        public TEnum Dim

        {

            get;

            set;

        }

​

        public IEnumerable<S> Inc

        {

            get;

            set;

        }

    }

​

    public class MyImplementation : IMyInterface

    {

    }

​

    public class MyContainer<TEnum>

        where TEnum : struct, IConvertible

    {

        public SomeClass<TEnum, IMyInterface> MyProp

        {

            get;

            set;

        }

    }

}