为什么AutoMapper不能映射我的子对象？

Question

我有两个实体（表）Person和Address。地址是Person的子实体。

public class Person 
{ 
    public Person() 
    { 
     Addresses = new ObservableCollection<Address>(); 
    } 

    [Key] 
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)] 
    [DisplayName("Primary Key")] 
    [ScaffoldColumn(false)] 
    public int Id { get; set; } 

    [Required] 
    [DisplayName("First Name")] 
    [StringLength(25, MinimumLength = 3)] 
    public string FirstName { get; set; } 

    [DisplayName("Middle Name")] 
    [MaxLength(25)] 
    public string MiddleName { get; set; } 

    [Required] 
    [DisplayName("Last Name")] 
    [StringLength(25, MinimumLength = 3)] 
    public string LastName { get; set; } 

    public string FullName => $"{FirstName} {LastName}"; 

    [Required] 
    [DisplayName("Date of Birth")] 
    [DataType(DataType.Date)] 
    public DateTime BirthDate { get; set; } 

    public ObservableCollection<Address> Addresses { get; set; } 
} 


public class Address 
{ 
    [Key] 
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)] 
    [DisplayName("Primary Key")] 
    [ScaffoldColumn(false)] 
    public int Id { get; set; } 
    public int OwnerId { get; set; } 
    public Person Owner { get; set; } 
    public string Line1 { get; set; } 
    public string Line2 { get; set; } 
    public string City { get; set; } 
    public string State { get; set; } 
    public string ZipCode { get; set; } 
} 

这两个表都有一个（几乎）镜像存档表，分别名为PersonArchive和AddressArchive。

public class PersonArchive 
{ 
    public PersonArchive() 
    { 
     Addresses = new ObservableCollection<AddressArchive>(); 
    } 

    [Key] 
    [DisplayName("Primary Key")] 
    [ScaffoldColumn(false)] 
    public int Id { get; set; } 

    [Required] 
    [DisplayName("First Name")] 
    [StringLength(25, MinimumLength = 3)] 
    public string FirstName { get; set; } 

    [DisplayName("Middle Name")] 
    [MaxLength(25)] 
    public string MiddleName { get; set; } 

    [Required] 
    [DisplayName("Last Name")] 
    [StringLength(25, MinimumLength = 3)] 
    public string LastName { get; set; } 

    public string FullName => $"{FirstName} {LastName}"; 

    [Required] 
    [DisplayName("Date of Birth")] 
    [DataType(DataType.Date)] 
    public DateTime BirthDate { get; set; } 

    public ObservableCollection<AddressArchive> Addresses { get; set; } 
} 

public class AddressArchive 
{ 
    [Key] 
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)] 
    [DisplayName("Primary Key")] 
    [ScaffoldColumn(false)] 
    public int Id { get; set; } 
    public int OwnerId { get; set; } 
    public PersonArchive Owner { get; set; } 
    public string Line1 { get; set; } 
    public string Line2 { get; set; } 
    public string City { get; set; } 
    public string State { get; set; } 
    public string ZipCode { get; set; } 
} 

在Person表的每个字段的类型相匹配，除了一个以外的地址字段是地址的集合的并在PeopleArchive相应字段的类型是AddressArchive的。地址的字段所有者也一样。

 using (ArchiveDemoContext context = new ArchiveDemoContext()) 
     { 

      //Person p = context.People.Include("Addresses").FirstOrDefault(); 
      Person p = context.People.FirstOrDefault(); 

      MapperConfiguration config = new MapperConfiguration(cfg => 
      { 
       cfg.CreateMap<Person, PersonArchive>() 
        .ForMember(dest => dest.Addresses, opt => opt.MapFrom(src => src.Addresses)); 
       cfg.CreateMap<Address, AddressArchive>() 
        .ForMember(dest => dest.Owner, opt => opt.MapFrom(src => src.Owner)); 
      }); 

      config.AssertConfigurationIsValid(); 

      IMapper mapper = config.CreateMapper(); 

      PersonArchive person = mapper.Map<Person, PersonArchive>(p); 
      //context.People.Remove(p); 

      context.PeopleArchive.Add(person); 

      context.SaveChanges(); 
     } 

调试代码不会给我任何例外，但是，只有人存档，而不是地址。

由于事先

Answer 1

你不需要为你设置它的所有者ID地址，只要映射还给失主。改变你的映射：

cfg.CreateMap<Address, AddressArchive>() 
     .ForMember(dest => dest.Owner, opt => opt.Ignore());