如何使用Automapper在EF6中映射导航属性？

Question

注意：我从未解决过这个问题，只是继续使用直接的Linq查询。 .Select(a => new UserDetailsDto { ContactId = a.ContactId, etc

我遇到的问题是试图了解Automapper如何用于在一个查询中将导航属性与父实体进行映射。

假设我有一个与实体密切相关的UserDto，看起来像这样：

public class User
{
    public int UserId { get; set; }
    public int UserDetailsId { get; set; }
    public int ContactId { get; set; }
    public DateTime CreateDateTime { get; set; }
    public DateTime? ModifiedDateTime { get; set; }
    public DateTime? InactiveDateTime { get; set; }

    public UserDetail UserDetails { get; set; }
 }

然后我有一个名为UserDetail的实体，它主要由导航属性组成（我只发布一些道具以保持简短）：

public partial class UserDetail
{    
    public int UserDetailId { get; set; }
    public int UsertId { get; set; }
    public DateTime? DateOfBirth { get; set; }
    public int? ProviderId { get; set; }
    public int? FacilityId { get; set; }
    public int? CarrierId { get; set; }
    public int? GenderId { get; set; }
    public int? EthnicityId { get; set; }
}

然后是它的DTO

public class UserDetailDto
{
    public int ParticipantDetailId { get; set; }
    public int ParticipantId { get; set; }
    public DateTime DateOfBirth { get; set; }
    public string Provider { get; set; }
    public string Facility { get; set; }
    public string Carrier { get; set; }
    public string Gender { get; set; }
    public string Ethnicity { get; set; }
}

我已经看到你可以使用类似的东西：

IEnumerable<UserDto> users = await
      db.DbContext.Set<User>()
           .ProjectTo<UserDto>()
           .ToListAsync();

但我不知道如何将其与Mapper配置中的.ForMember结合使用。

我只是展示了我所见过的东西。对于如何实现这一点，我完全愿意接受任何建议。

修改

Mapper配置：

config.CreateMap<User, UserDto>();
config.CreateMap<UserDto, User>();

config.CreateMap<UserDetail, UserDetailDto>()
                        .ForMember(dto => dto.Provider, conf => conf.MapFrom(entity => entity.Provider.ProviderName))
                        .ForMember(dto => dto.Facility, conf => conf.MapFrom(entity => entity.Facility.FacilityName))
                        .ForMember(dto => dto.Carrier, conf => conf.MapFrom(entity => entity.Carrier.CarrierName))
                        .ForMember(dto => dto.Gender, conf => conf.MapFrom(entity => entity.Gender.GenderText))
                        .ForMember(dto => dto.Ethnicity, conf => conf.MapFrom(entity => entity.Ethnicity.EthnicityText))
                        .ForMember(dto => dto.Orientation, conf => conf.MapFrom(entity => entity.Orientation.OrientationText))
                        .ForMember(dto => dto.Education, conf => conf.MapFrom(entity => entity.Education.EducationText))
                        .ForMember(dto => dto.Employment, conf => conf.MapFrom(entity => entity.Employment.EmploymentText))
                        .ForMember(dto => dto.EarningRange, conf => conf.MapFrom(entity => entity.EarningRange.EarningRangeText))
                        .ForMember(dto => dto.Language, conf => conf.MapFrom(entity => entity.Language.LanguageCode))
                        .ForMember(dto => dto.CallTimeId, conf => conf.MapFrom(entity => entity.CallTime.CallTimeText));
                    config.CreateMap<ParticipantDetailDto, ParticipantDetail>();

config.CreateMap<UserDetailDto, UserDetail>();