映射到嵌套值 Automapper

Question

我正在努力映射 2 个对象。基本上有 Product，这是我的 EF 模型，我将它映射到 ProductDto，它有 FileDto。

我想将 Product.FileName 映射到 ProductDto.File.Internal 名称，该怎么做？ 下面的类。

public class Product : BaseEntity<long>
  {
    [MaxLength(100)]
    public string Name { get; set; }
    [MaxLength(100)]
    public string Barcode { get; set; }
    public int ShelfLife { get; set; }
    public int Weight { get; set; }
    public bool HasAllergens { get; set; }
    [MaxLength(100)]
    public string FileName { get; set; }
    [ForeignKey("Id")]
    public int CustomerId { get; set; }
    public virtual ICollection<ProductIngredient> ProductIngredient { get; set; }
    public virtual ICollection<Nutrition> Nutritions { get; set; }
    public virtual ICollection<ProductComposition> Composition { get; set; }
    public virtual IList<ProductionProcess> ProductionProcess { get; set; }
  }

  public class ProductDto
  {
    public long Id { get; set; }
    public DateTime CretedOn { get; set; }
    public DateTime UpdatedOn { get; set; }
    public string Name { get; set; }
    public string Barcode { get; set; }
    public int ShelfLife { get; set; }
    public int Weight { get; set; }
    public bool HasAllergens { get; set; }
    public int CustomerId { get; set; }
    public FileDto File { get; set; }
    public IList<IngredientDto> Ingredients { get; set; }
    public IList<NutritionDto> Nutritions { get; set; }
    public IList<ProductCompositionDto> Composition { get; set; }
    public IList<ProductionProcessDto> ProductionProcess { get; set; }

  }

  public class ProductionProcessDto
  {
    public string Key { get; set; }
    public string Value { get; set; }
    public FileDto File { get; set; }
  }

  public class NutritionDto
  {
    public string Key { get; set; }
    public string Value { get; set; }
  }

  public class ProductCompositionDto
  {
    public string Key { get; set; }
    public string Value { get; set; }
  }

文件目录：

public class FileDto
  {
    public string Base64EncodedFile { get; set; }
    public string OriginalName { get; set; }
    public string InternalName { get; set; }
    public string Type { get; set; }
  }

到目前为止的自动映射器：

//Product
      CreateMap<Nutrition, NutritionDto>().ReverseMap();
      CreateMap<ProductComposition, ProductCompositionDto>().ReverseMap();
      CreateMap<ProductionProcessDto, ProductionProcess>()
        .ForMember(dest => dest.FileInternalName, opt => opt.MapFrom(src => src.File.InternalName))
        .ForMember(dest => dest.FileOriginalName, opt => opt.MapFrom(src => src.File.OriginalName))
        .ReverseMap();

      CreateMap<Product, ProductDto>()
        .ForMember(d => d.File, o => o.MapFrom(s => Mapper.Map<Product, FileDto>(s)))
        .ForMember(d => d.Nutritions, o => o.MapFrom(s => s.Nutritions))
        .ForMember(d => d.Composition, o => o.MapFrom(s => s.Composition))
        .ForMember(d => d.ProductionProcess, o => o.MapFrom(s => s.ProductionProcess))
        .ForMember(d => d.Ingredients, o => o.MapFrom(s => s.ProductIngredient.Select(pi => pi.Ingredients)))
        .ReverseMap();
      CreateMap<ProductDto, Product>()
        .ForMember(d => d.FileName, o => o.MapFrom(s => s.File.InternalName))
        .ReverseMap();

我能够从 ProductDto（在数据发布上）映射到 Product，但不能以其他方式映射，非常感谢所有帮助

谢谢

Answer 1

这段代码解决了我的问题：

.ForMember(d => d.File, o => o.MapFrom(model => new FileDto { InternalName = model.FileName }))

适用于：

CreateMap<Product, ProductDto>()