using System;

using System.Collections.Generic;

using System.Linq;

using AutoMapper;

public class Program

{

    public static void Main()

    {

        var config = new MapperConfiguration(cfg => 

                    cfg.CreateMap<Thing1, Thing2>()

                    .ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.Name))

                );

        var mapper = config.CreateMapper();

        List<Thing2> list = null;

        IEnumerable<Thing2> result = mapper.Map<IEnumerable<Thing2>>(list);

        Console.WriteLine(result);

        Console.WriteLine(result.Count());

    }

}

​

​

public class Thing1{

    public string Name {get;set;}

}

​

public class Thing2{

    public string Name {get;set;}

}