static void Main(string[] args)
{
var a = new A
{
FirstName = "Gregory",
LastName = "House",
Age = "39",
SecondAge = new C()
{
Age = 99
}
};
var config = new MapperConfiguration();
config.CreateMap <A, B>()
.Ignore(i => i.FirstName)
.ForMember(i => i.Age, i => int.Parse(i.Age));
config.CreateCustomMap <B, A>(i => new A
{
FirstName = i.FirstName,
LastName = i.LastName
});
config.CreateMap <C, D>();
Mapper.Initialize(config);
var b1 = Mapper.Map <A, B>(a);
var b2 = Mapper.Map <B, A>(b1);
System.Console.ReadLine();
}