using System;

using System.Collections.Generic;

using System.Linq;

using AutoMapper;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var source = new CategoryStatus

        {

            Subgroup = new CategorySubgroup

            {

                SubgroupCode = "SubgroupCode",

                CategoryGroup = new CategoryGroup { GroupCode = "SubgroupCode" }

            }

        };

        var result = Mapper.Map<Dest, CategoryStatus>(source);

    }

}

​

public class Dest

{

    public string SubgroupCode { get; set; }

    public string GroupCode { get; set; }

}

​

public class CategoryStatus

{

    public CategorySubgroup Subgroup { get; set; }

}

​

public class CategorySubgroup

{

    public string SubgroupCode { get; set; }

    public CategoryGroup CategoryGroup { get; set; }

}

​

public class CategoryGroup

{

    public string GroupCode { get; set; }

}

​

public static class Mapper

{

    private static IMapper mapper;

​

    static Mapper()

    {

        var cfg2 = new MapperConfiguration(cfg => {

​

            cfg.CreateMap<CategoryStatus, Dest>()

                .IncludeMembers(x => x.Subgroup);

​

            cfg.CreateMap<CategoryGroup, Dest>();

​

            cfg.CreateMap<CategorySubgroup, Dest>()

                .IncludeMembers(x => x.CategoryGroup);

​

        });

​

        mapper = cfg2.CreateMapper();

    }

​

    public static TDest Map<TDest, TSource>(this TSource source, Action<IMappingOperationOptions> action = null)

    {

        if (source == null)

        {

            return default(TDest);

        }

​

        return action == null ? mapper.Map<TDest>(source) : mapper.Map<TDest>(source, action);

    }

​

    public static IReadOnlyList<TDest> Map<TDest, TSource>(this IEnumerable<TSource> source)

    {

        if (source == null)

        {

            return null;

        }

​

        return source.Select(e => e.Map<TDest, TSource>()).ToList();

    }

}