using System;

using AutoMapper;

using AutoMapper.Extensions.EnumMapping;

public class Program

{

    public static void Main()

    {

        var configuration = new MapperConfiguration(cfg => 

        {

            cfg.CreateMap<string, SrcEnum>().ConvertUsing((string src, SrcEnum dest) => {

                // Just to show it works

                if(src=="C")

                {

                    src= "D";

                }

                return Enum.Parse<SrcEnum>(src);

            });

            cfg.CreateMap<SrcEnum, DestEnum>().ConvertUsingEnumMapping(opt => opt

                .MapByName()

                .MapValue(SrcEnum.A, DestEnum.E)

                .MapValue(SrcEnum.B, DestEnum.F)

                .MapValue(SrcEnum.C, DestEnum.G)

                .MapValue(SrcEnum.D, DestEnum.H));

        });

        // only during development, validate your mappings; remove it before release

        configuration.AssertConfigurationIsValid();

        // use DI (http://docs.automapper.org/en/latest/Dependency-injection.html) or create the mapper yourself

        var mapper = configuration.CreateMapper();

        var input = "C";

        var result1 = mapper.Map<SrcEnum>(input);   

        var result2 = mapper.Map<DestEnum>(result1);    

        Console.WriteLine($"Input value: {input.GetType().Name} \"{input}\"");

        Console.WriteLine($"Mapped value 1: {result1.GetType().Name}.{result1}");

        Console.WriteLine($"Mapped value 2: {result2.GetType().Name}.{result2}");

    }       

}

​

public enum SrcEnum

{

    A, B, C, D

}

public enum DestEnum

{

    E, F, G, H

}

​