將DTO映射到EF實體異常

Question

我有一個申請工作的申請。 申請人填寫完所有信息並提交申請后，我要保存它。 當前，我有一個組件來保存應用程序的每個部分，因為它與數據模型（個人信息，可用性等）相關。 運行它時，出現一個異常，指出：

找到未映射的成員。 在下面查看類型和成員。 添加自定義映射表達式，忽略，添加自定義解析器或修改源/目標類型

對於沒有匹配的構造函數，請添加一個無參數ctor，添加可選參數，或映射所有構造函數參數

CandidateDto->候選人（目標成員列表）EmploymentApplication.Common.DataTransferObjects.CandidateDto-> EmploymentApplication.Entities.Candidate（目標成員列表）

未映射的屬性：AddressId CandidateApplications CandidateAvailability CandidateEducations Education CandidateEmploymentHistories CandidateReferences CandidateTeleLicenses

我試圖在MapFrom語句中指定AddressId，其余的它們只是我說過在映射初始化中忽略的EF導航屬性。 不幸的是，錯誤仍然存​​在，我現在不知道該怎么辦。

看一下我的映射：

        Mapper.Initialize(m => m.CreateMap<Candidate, CandidateDto>());
        Mapper.Initialize(m => m.CreateMap<CandidateDto, Candidate>()
            .ForMember(dest => dest.AddressId, opt => opt.MapFrom(src => src.Address.AddressId))
            .ForMember(dest => dest.CandidateApplications, opt => opt.Ignore())
            .ForMember(dest => dest.CandidateAvailabilities, opt => opt.Ignore())
            .ForMember(dest => dest.CandidateEducations, opt => opt.Ignore())
            .ForMember(dest => dest.CandidateEmploymentHistories, opt => opt.Ignore())
            .ForMember(dest => dest.CandidateReferences, opt => opt.Ignore())
            .ForMember(dest => dest.CandidateTeleLicenses, opt => opt.Ignore())
        );

這是實際發生映射的組件方法：

        public void SaveCandidateInfo(CandidateDto candidateDto)
    {
        var candidateInfoToAdd = _mapper.Map<Candidate>(candidateDto);
        _candidateRepository.Add(candidateInfoToAdd);
        _candidateRepository.Save();
    }

這是DTO：

    public class CandidateDto
{
    public Guid CandidateId { get; set; }
    public AddressDto Address { get; set; }
    public UserAccountDto UserAccount { get; set; }
    public string LastName { get; set; }
    public string FirstName { get; set; }
    public DateTime DateOfBirth { get; set; }
    public string PrimaryPhone { get; set; }
    public string Email { get; set; }
    public bool HasWorkEligibility { get; set; }
    public DateTime DateCreated { get; set; }
    public DateTime DateModified { get; set; }
    public Guid CreatedBy { get; set; }
    public Guid ModifiedBy { get; set; }
    public Guid UserAccountId { get; set; }
}

最后，這是候選人的EF課程：

 public partial class Candidate
{
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
    public Candidate()
    {
        this.CandidateApplications = new HashSet<CandidateApplication>();
        this.CandidateAvailabilities = new HashSet<CandidateAvailability>();
        this.CandidateEducations = new HashSet<CandidateEducation>();
        this.CandidateEmploymentHistories = new HashSet<CandidateEmploymentHistory>();
        this.CandidateReferences = new HashSet<CandidateReference>();
        this.CandidateTeleLicenses = new HashSet<CandidateTeleLicense>();
    }

    public System.Guid CandidateId { get; set; }
    public Nullable<System.Guid> AddressId { get; set; }
    public string LastName { get; set; }
    public string FirstName { get; set; }
    public System.DateTime DateOfBirth { get; set; }
    public string PrimaryPhone { get; set; }
    public string Email { get; set; }
    public bool HasWorkEligibility { get; set; }
    public System.DateTime DateCreated { get; set; }
    public System.DateTime DateModified { get; set; }
    public System.Guid CreatedBy { get; set; }
    public System.Guid ModifiedBy { get; set; }
    public System.Guid UserAccountId { get; set; }

    public virtual Address Address { get; set; }
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<CandidateApplication> CandidateApplications { get; set; }
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<CandidateAvailability> CandidateAvailabilities { get; set; }
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<CandidateEducation> CandidateEducations { get; set; }
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<CandidateEmploymentHistory> CandidateEmploymentHistories { get; set; }
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<CandidateReference> CandidateReferences { get; set; }
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public virtual ICollection<CandidateTeleLicense> CandidateTeleLicenses { get; set; }
    public virtual UserAccount UserAccount { get; set; }
}

謝謝您的幫助！

Answer 1

您定義了一些有關目標屬性的配置以忽略它們，但是在嘗試映射它們時，沒有應傳遞給Map方法的目標實例。 因此，與忽略的屬性無關。

因此，您應該更改它；

var candidateInfoToAdd = _mapper.Map<Candidate>(candidateDto);

至

var candidateInfoToAdd = new Candidate();
_mapper.Map<CandidateDto,Candidate>(candidateDto, candidateInfoToAdd);