Question

我收到了一个关于automapper v6.0.2的问题，其中automapper试图将ICollection推送到int而不是指定的集合。

错误：

    Mapping types:
Member_B3B146AB4F61AEDE3DF3639BDBD65BFA5BCA0FC414F11960DC39DA834F2A8CBD -> ICollection`1
System.Data.Entity.DynamicProxies.Memberr_B3B146AB4F61AEDE3DF3639BDBD65BFA5BCA0FC414F11960DC39DA834F2A8CBD -> System.Collections.Generic.ICollection`1[[MemberService.Dto.DependentDetailDto, MemberService, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]

Destination path:
MemberDetailDto.Dependents.Dependents

Source value:
System.Data.Entity.DynamicProxies.MbmRosterSubscriber_B3B146AB4F61AEDE3DF3639BDBD65BFA5BCA0FC414F11960DC39DA834F2A8CBD ---> System.OverflowException: Value was either too large or too small for an Int32.

会员

public Member ()
{
   this.Dependents = new HashSet<Dependent>();
}
public virtual ICollection<Dependent> Dependents { get; set; }

AutoMapper配置

CreateMap<Dependent, DependentDetailDto>();
CreateMap<Member, MemberDetailDto>()
                .ForMember(a => a.Dependents, o => o.MapFrom(x => Mapper.Map<ICollection<Dependent>, ICollection<DependentDetail>>(x.Dependents)));

从属：

        public string Title { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string MiddleName { get; set; }
        public System.DateTime Dob { get; set; }
        public string Sex { get; set; }
        public string Relationship { get; set; }
        public string CreatedBy { get; set; }
        public string ModifiedBy { get; set; }
        public string DepartmentCode { get; set; }
        public string Address1 { get; set; }
        public string Address2 { get; set; }
        public string Address3 { get; set; }
        public string City { get; set; }
        public string State { get; set; }
        public string MailCountry { get; set; }
        public string Zip { get; set; }
        public Nullable<System.DateTime> SsnEncryptDate { get; set; }

删除家属时，订阅者将完美地映射

至于Dependent实体和Model，它们会复制并粘贴所有项目public。看起来好像AutoMapper试图将集合压缩到int而不是指定的地图。

任何想法？

Dependents是导航属性

编辑：这是在异步方法的功能测试中测试的。已经创建了快速单元测试：

[TestMethod]
public  void RetrieveActiveMember()
{
    MemberEntity.Member Subscriber = new Member();
    ICollection<Dependent> Dependent = new List<Dependent>();
    Dependent.Add(new Dependent { HostCountry = "HOME" });
    Subscriber.Dependents = Dependent;

    var Mapped = AutoMapper.Mapper.Map<Member, MemberDetailDto>(Subscriber);

    Assert.IsNotNull(Mapped);
}

现在返回的错误是方法＆＃39;添加＆＃39;在类型X中没有实现＆＃39;

Property:
Dependents ---> System.TypeLoadException: Method 'Add' in type 'Proxy<System.Collections.Generic.ICollection`1[[MemberService.Dto.DependentDetailDto_MemberService_Version=1.0.0.0_Culture=neutral_PublicKeyToken=null]]_mscorlib_Version=4.0.0.0_Culture=neutral_PublicKeyToken=b77a5c561934e089>' from assembly 'AutoMapper.Proxies, Version=0.0.0.0, Culture=neutral, PublicKeyToken=be96cd2c38ef1005' does not have an implementation.

将依赖项的automapper配置更改为

CreateMap<ICollection<Dependent>, ICollection<DependentDetailDto>>()
                .ConstructUsing((ICollection<Dependent> Dependents) => {
                    List<DependentDetailDto> DependentList = new List<DependentDetailDto>();
                    foreach (var Dependent in Dependents)
                        DependentList.Add(new DependentDetailDto { });
                return DependentList;
            });

使单元测试工作虽然不再实际使用Automapper这是一个很大的警告，但它仍然在功能测试中中断

我无法想到要添加的任何内容，因为家属甚至没有整数字段

附录：实体，Dto和调用者都在不同的库中，但我无法在.NETFiddle中复制它

Answer 1

Automapper should normally handle collections for you. It will also look up any known maps that might apply, so no need to call Mapper.Map inside a MapFrom.

Just define the maps for individual entities:

CreateMap<Dependent, DependentDetailDto>();
CreateMap<Member, MemberDetailDto>()
    .ForMember(dto => dto.Dependents, o => o.MapFrom(src => src.Dependents);

Answer 2

没有找出问题的根本原因，但找到了解决办法。

将MemberDto属性Dependents名称更改为Dependentss并且有效。改变它会再次打破它。我应该补充说，这两个对象都没有其他Dependents属性。

我不知道，但这个名字似乎正在破坏它。

AutoMapper不映射子属性

2 个答案: