Automapper包含父类中的所有属性

Question

我有以下代码：

using System;
using AutoMapper;
namespace AutoMapperPlayground
{
public class Program
{
public static void Main()
{
var derived = new Derived {
Title = "a",
Base = new Base {
Id = 1,
Test = "b"
}
};

Mapper.CreateMap<Derived, DerivedDTO>();

var derivedDTO = Mapper.Map<DerivedDTO>(derived);
Console.WriteLine("{0},{1},{2}", derivedDTO.Test, derivedDTO.Id, derivedDTO.Title);         

}
}
public class Base
{
public int Id { get; set; }
public string Test {get; set; }
}
public class Derived
{

public Base Base {get; set; }
public string Title {get; set; }
}
public class BaseDTO
{
public int Id { get; set; }
public string Test {get; set; }
}
public class DerivedDTO : BaseDTO
{
public string Title {get; set; } 
}
}

输出为0，a。是否可以从Base填充id和title属性？

示例.net fiddle

感谢

Answer 1

展平是AutoMapper的核心概念之一，是按惯例完成的；DTO属性名称需要以源类型中组成对象的属性名称为前缀

public class DerivedDTO
{
public int BaseId { get; set; }
public string BaseTest { get; set; }
public string Title { get; set; } 
}

但是，如果您想保留现有的结构(继承自BaseDTO的DerivedDTO(，则需要手动定义这些映射：

Mapper.CreateMap<Derived, DerivedDTO>()
.ForMember(dest => dest.Id, opt => opt.MapFrom(src => src.Base.Id)),
.ForMember(dest => dest.Test, opt => opt.MapFrom(src => src.Base.Test));

或者，您可以创建一个从Base到DerivedDTO的映射，并将其包含在Derived映射中：

Mapper.CreateMap<Base, DerivedDTO>(); // Map Id and Test
Mapper.CreateMap<Derived, DerivedDTO>() // Map Title
.IncludeMembers(src => src.Base); // Reuse above mapping to include Base Id and Test