Mapping multiple collections to a single collection using Automapper - automapper

Question

I am able to map group of sametype of collections to a single collection using the below code.
AutoMapper.Mapper.CreateMap<Source, Destination>().ForMember(
dest => dest.Drivers,
opt => opt.MapFrom(src => src.BikeDrivers.Concat(src.CarDrivers).Concat(src.TruckDrivers)));
With the above solution I am able to map all the three type of drivers into one collection.
My destination object (Driver) has a property called DriverType which helps in identifying the type of driver. (BikeDriver/CarDriver/TruckDriver)
In the above code, how i can set the DriverType property based on the collection I am adding.
for eg: i have to hard code
DriverType = CarDriver for CarDrivers collection items
DriverType = BikeDriverfor BikeDrivers collection item.
Thanks in advance

Answer 1

To set the DriverType property you have to have this knowledge in your source object. I can't see your big picture, but this maybe used as a sample
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
var s = new Source()
{
BikeDrivers = new List<BikeDriver>() {new BikeDriver()},
CarDrivers = new List<CarDriver>() {new CarDriver()},
TruckDrivers = new List<TruckDriver>() {new TruckDriver()},
};
var d = new Destination();
AutoMapper.Mapper.CreateMap<Source, Destination>().ForMember(
dest => dest.Drivers,
opt => opt.MapFrom(src => src.BikeDrivers.Concat<IDriver>(src.CarDrivers).Concat<IDriver>(src.TruckDrivers)));
var result = AutoMapper.Mapper.Map(s, d);
}
public class Driver : IDriver
{
public string DriverType { get; set; }
}
public class Destination
{
public IEnumerable<IDriver> Drivers { get; set; }
}
public class Source
{
public IEnumerable<BikeDriver> BikeDrivers { get; set; }
public IEnumerable<CarDriver> CarDrivers { get; set; }
public IEnumerable<TruckDriver> TruckDrivers { get; set; }
}
public interface IDriver
{
string DriverType { get; set; }
}
public class BikeDriver : IDriver
{
public string DriverType
{
get { return "BikeDriver"; }
set { throw new NotImplementedException(); }
}
}
public class CarDriver : IDriver
{
public string DriverType
{
get { return "CarDriver"; }
set { throw new NotImplementedException(); }
}
}
public class TruckDriver : IDriver
{
public string DriverType
{
get { return "TruckDriver"; }
set { throw new NotImplementedException(); }
}
}
}
}