AutoMapper map only needed fields

Question

I use AutoMapper for mapping classes. I am struggling with the Automapper syntax. I have domain classes:

        public class Club
        {
            public int Id { get; set; }
            public string Name { get; set; }
            public DateTime OpenDate { get; set; }
            public IEnumerable<Team> Teams { get; set; }
        }

        public class Team
        {
            public int Id { get; set; }
            public string Name { get; set; }
            public string Department { get; set; }
            public IEnumerable<Player> Players { get; set; }
        }

        public class Player
        {
            public int Id { get; set; }
            public string Name { get; set; }
            public string Surname { get; set; }
            public int Age { get; set; }
            public string Address { get; set; }
        }

Also i have dto classes:

        public class ClubDTO
        {
            public int Id { get; set; }
            public string Name { get; set; }
            public DateTime OpenDate { get; set; }
            public IEnumerable<Team> TeamsDTO { get; set; }
        }

        public class TeamDTO
        {
            public int Id { get; set; }
            public string Name { get; set; }
            public string Department { get; set; }
            public IEnumerable<Player> PlayersDTO { get; set; }
        }

        public class PlayerDTO
        {
            public int Id { get; set; }
            public string Name { get; set; }
            public string Surname { get; set; }
            public int Age { get; set; }
            public string Address { get; set; }
        }

I have mapping setting from DTO classes in domain classes:

CreateMap<PlayerDTO, Player>();
CreateMap<TeamDTO, Team>();
CreateMap<ClubDTO, Club>();

I map ClubDTO class to Club :

...
 _mapper.Map(clubDto, club);
...

How do I setting mapping only Player.Age and Player.Addres instead of all fields all classes?

Answer 1

I believe you should ignore whatever properties you wouldn't like to be mapped, like so:

CreateMap<PlayerDTO, Player>();
    .ForMember(x => x.Id, x => x.Ignore())
    .ForMember(x => x.Name, x => x.Ignore());
    .ForMember(x => x.Surname , x => x.Ignore());

Take notice that this should be done during automapper configuration, not when you call the Map method.

Answer 2

You should be able to do something like this: _mapper.Map(from, to).ForMember(x => x.MyProperty, opt => opt.Ignore());

I would also suggest using View Models . This helps alot with AutoMapper For example:

public class Player
{
     public int Id { get; set; }
     public string Name { get; set; }
     public string Surname { get; set; }
     public int Age { get; set; }
     public string Address { get; set; }
}

public class PlayerViewModel
{
     public int Id{get; set;
     //more fields that you can use in your views
}

Answer 3

 public class PlayerDTO
    {
       
        public int Age { get; set; }
        public string Address { get; set; }
    }

    var onlyAgeAndAdress=_mapper.Map(Player, PlayerDTO);

you will get only ages and adresses.