Getting-started.html

IMappingExpression<TSource, TDestination> CreateMap<TSource, TDestination>(MemberList memberList);

Mapper.Initialize(cfg => cfg.CreateMap<Order, OrderDto>());

//or

var config = new MapperConfiguration(cfg => cfg.CreateMap<Order, OrderDto>());

   IMappingExpression<TSource, TDestination> ForMember<TMember>(Expression<Func<TDestination, TMember>> destinationMember, Action<IMemberConfigurationExpression<TSource, TDestination, TMember>> memberOptions);

var mapper = config.CreateMapper();

// or

var mapper = new Mapper(config);

OrderDto dto = mapper.Map<OrderDto>(order);

// or

OrderDto dto = Mapper.Map<OrderDto>(order);

C# : Converting Base Class to Child Class

https://stackoverflow.com/a/25653977/3782855

'm surprised AutoMapper hasn't come up as an answer.

As is clear from all the previous answers, you cannot do the typecast. However, using AutoMapper, in a few lines of code you can have a new SkyfilterClient instantiated based on an existing NetworkClient.

In essence, you would put the following where you are currently doing your typecasting:

using AutoMapper;

...

// somewhere, your network client was declared

var existingNetworkClient = new NetworkClient();

...

// now we want to type-cast, but we can't, so we instantiate using AutoMapper

AutoMapper.Mapper.CreateMap<NetworkClient, SkyfilterClient>();

var skyfilterObject = AutoMapper.Mapper.Map<SkyfilterClient>(existingNetworkClient);

Here's a full-blown example:

 public class Vehicle

  {

    public int NumWheels { get; set; }

    public bool HasMotor { get; set; }

  }

  public class Car: Vehicle

  {

    public string Color { get; set; }

    public string SteeringColumnStyle { get; set; }

  }

  public class CarMaker

  {

    // I am given vehicles that I want to turn into cars...

    public List<Car> Convert(List<Vehicle> vehicles)

    {

      var cars = new List<Car>();

      AutoMapper.Mapper.CreateMap<Vehicle, Car>(); // Declare that we want some automagic to happen

      foreach (var vehicle in vehicles)

      {

        var car = AutoMapper.Mapper.Map<Car>(vehicle);

        // At this point, the car-specific properties (Color and SteeringColumnStyle) are null, because there are no properties in the Vehicle object to map from.

        // However, car's NumWheels and HasMotor properties which exist due to inheritance, are populated by AutoMapper.

        cars.Add(car);

      }

      return cars;

    }

  }

巴特西

How to use AutoMapper

http://docs.automapper.org/en/stable/Getting-started.html

C# : Converting Base Class to Child Class

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