Question

我正在尝试将我的数据从我的实体模型（PatientRegistry）传输到视图模型（PatientRegistryViewModel），而后者只有一个简单的嵌套属性（MobilePhoneNumberViewModel），我在实体模型和视图模型之间创建了一个映射，在模型实体和嵌套属性视图模型之间创建了另一个映射。在我的控制器中，我只是在实体模型和视图模型之间调用map！

我的映射器无法转移到嵌套属性！

实体模型，

  public class PatientRegistry
    {
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        [Display(Name = "Record Id")]
        public long RecordId { get; set; }
        [Key, DatabaseGenerated(DatabaseGeneratedOption.None)]
        [Display(Name = "Patient File Number")]
        public long PatientFileId { get; set; }
        [Required, StringLength(50)]
        [Display(Name = "First Name")]
        public string FirstName { get; set; }
        public int CountryCodeId { get; set; }
        public Country CountryCode { get; set; }
        public int CellProvider { get; set; }
        [Required, StringLength(15)]
        public string PatientMobileNo { get; set; }
        [StringLength(20)]
        public string PatientLandLine { get; set; }
}

我的查看模型是，

public class PatientRegistryViewModel {

        public long PatientFileId { get; set; }

        [Required]
        [Display (Name = "First Name")]
        public string FirstName { get; set; }
        [Required]
        [Display (Name = "Last Name")]
        public string LastName { get; set; }
        public string AliasName { get; set; }

        [Required]
        [Display (Name = "Date of birth")]
        public DateTime PatientDob { get; set; }

        public MobilePhoneNumberViewModel PatientMobileNo { get; set; }
}

我的MobilePhoneNumberViewModel看起来像，

  public class MobilePhoneNumberViewModel {

        [Required]
        [Display (Name = "Country Code Id")]
        public int CountryCodeId { get; set; }

        [Required]
        [Display (Name = "Cell Provider")]
        public int CellProvider { get; set; }

        [Required]
        [Display (Name = "Mobile No")]
        public string PatientMobileNo { get; set; }
    }

我的地图是，

 CreateMap<PatientRegistry, PatientRegistryViewModel> ()
                .ForMember (pr => pr.GenderId, opt => opt.MapFrom (m => m.Gender.Id))
                .ForMember (pr => pr.StatusId, opt => opt.MapFrom (m => m.Status.Id))
                .ForMember (pr => pr.CountryId, opt => opt.MapFrom (m => m.Country.Id))
                .ForMember (pr => pr.StateId, opt => opt.MapFrom (m => m.State.Id))
                .ForMember (pr => pr.CityId, opt => opt.MapFrom (m => m.City.Id))
                .ForMember (pr => pr.NationalityId, opt => opt.MapFrom (m => m.Nationality.Id))
                .ForMember (pr => pr.OccupationId, opt => opt.MapFrom (m => m.Occupation.Id))
                .ForMember (pr => pr.MaritalStatusId, opt => opt.MapFrom (m => m.MaritalStatus.Id))
                .ForMember (dest => dest.PatientMobileNo.PatientMobileNo, opt => opt.MapFrom (src => src.PatientMobileNo))
                .ForMember (pr => pr.PatientMobileNo.CellProvider, opt => opt.MapFrom (m => m.CellProvider))
                .ForMember (pr => pr.PatientMobileNo.CountryCodeId, opt => opt.MapFrom (m => m.CountryCodeId))
                .ForMember (pr => pr.EthnicityId, opt => opt.MapFrom (m => m.Ethnicity.Id))
                .ForMember (pr => pr.Partners, opt => opt.MapFrom (m => m.Partners));
and

     CreateMap<PatientRegistry, MobilePhoneNumberViewModel> ()
                .ForMember (pr => pr.CountryCodeId, opt => opt.MapFrom (m => m.CountryCodeId))
                .ForMember (pr => pr.CellProvider, opt => opt.MapFrom (m => m.CellProvider))
                .ForMember (pr => pr.PatientMobileNo, opt => opt.MapFrom (m => m.PatientMobileNo));

（我缩短了这个问题的模型）

我一直收到这个错误，

未处理的异常：System.Reflection.TargetInvocationException：调用的目标抛出了异常。 ---＆GT; System.ArgumentException：表达式'dest =＆gt; dest.PatientMobileNo.PatientMobileNo'必须解析为顶级成员而不是任何子对象的属性。在上使用自定义解析器改为子类型或AfterMap选项。

如果我删除

            .ForMember (dest => dest.PatientMobileNo.PatientMobileNo, opt => opt.MapFrom (src => src.PatientMobileNo))
            .ForMember (pr => pr.PatientMobileNo.CellProvider, opt => opt.MapFrom (m => m.CellProvider))
            .ForMember (pr => pr.PatientMobileNo.CountryCodeId, opt => opt.MapFrom (m => m.CountryCodeId))

AutoMapperMappingException: Error mapping types.
映射类型：PatientRegistry - ＆gt; PatientRegistryViewModel   ArtNgCore.Core.Models.ClinicCore.PatientRegistry - ＆gt;   ArtNgCore.Controllers.ViewModels.ClinicCoreViewModels.PatientRegistryViewModel

类型地图配置：PatientRegistry - ＆gt; PatientRegistryViewModel   ArtNgCore.Core.Models.ClinicCore.PatientRegistry - ＆gt;   ArtNgCore.Controllers.ViewModels.ClinicCoreViewModels.PatientRegistryViewModel

财产：PatientMobileNo

这是怎么回事？

Answer 1

如异常所示，您尝试从源对象属性映射到目标对象的属性属性。同时，没有为目标对象的属性本身PatientRegistryViewModel.PatientMobileNo定义映射。

PatientRegistry.PatientMobileNo → PatientRegistryViewModel.PatientMobileNo.PatientMobileNo 
PatientRegistry.CellProvider → PatientRegistryViewModel.PatientMobileNo.CellProvider
PatientRegistry.CountryCodeId → PatientRegistryViewModel.PatientMobileNo.CellProvider

您可以做的是定义从源对象到目标对象的另一个映射＆＃39;属性。

cfg.CreateMap<PatientRegistry, PatientRegistryViewModel>()
                .ForMember(dest => dest.PatientMobileNo,opt => opt.MapFrom(model => model));

cfg.CreateMap<PatientRegistry, MobilePhoneNumberViewModel>()
                .ForMember(dest => dest.PatientMobileNo, opt => opt.MapFrom(model => model.PatientMobileNo))
                .ForMember(dest => dest.CountryCodeId, opt => opt.MapFrom(model => model.CountryCodeId))
                .ForMember(dest => dest.CellProvider, opt => opt.MapFrom(model => model.CellProvider));

为什么我不能使用automapper将数据传输到视图模型中的嵌套属性？

1 个答案: