using System;

using System.Collections.Generic;

using DryIoc;

public class Program

{

    public static void Main()

    {

        var container = new Container();

        container.RegisterMany<Action1>();                 

        container.RegisterMany<Command1>();

        var parsersList = container.Resolve<IList<IParser>>();

        // works fine

        container.Resolve<IAction>();

        // works fine

        container.Resolve<ICommand>();

        // Throws because IParser is registered multiple times (as Action and as Command),

        // and container is unable to select one. This is precisely what exception is saying.

        //container.Resolve<IParser>();

        Console.WriteLine(parsersList.Count);

    }

    public interface IParser {}

    public interface IAction : IParser {}

    public interface ICommand : IParser {}

    //impl

    public class Action1 : IAction {}

    public class Command1 : ICommand {}

}