當源中不存在屬性時自動映射器映射

Question

我試圖使用Automapper將ViewModel映射到Domain類。

但是，ViewModel包含一個不存在於Domain類中的屬性。

相反，我使用Domain類中的一個不同的屬性Product來映射到ViewModel Price屬性，但這看起來沒有起作用。

public class OrderViewModel 
{ 
    public IEnumerable<Product> Product { get; set; } 

    public IEnumerable<Price> Price { get; set; } 

} 

public class Order 
{ 
    public IEnumerable<Product> Product { get; set; } 
} 

public class Product 
{ 
    public string Code { get; set; } 

    public string Name { get; set; } 

    public string Description { get; set; } 

    public decimal Amount { get; set; } 

    public decimal DeliveryCharge { get; set; } 

} 

public class Price 
{ 
    public string UniqueProductCode { get; set; } 

    public decimal Charge { get; set; } 

    public decimal CourierCharge { get; set; } 

} 

在我的映射分佈

然後，我必須設置如下：

public class DomainToViewModelMappingProfile : Profile 
    { 
     public override string ProfileName 
     { 
      get 
      { 
       return "DomainToViewModelMappings"; 
      } 
     } 

     public DomainToViewModelMappingProfile() 
     { 
      ConfigureMappings(); 
     } 


     /// <summary> 
     /// Creates a mapping between source (Domain) and destination (ViewModel) 
     /// </summary> 
     private void ConfigureMappings() 
     { 

      CreateMap<Core.Domain.Product, Web.Models.Price>() 
       .ForMember(dest => dest.UniqueProductCode, 
          opts => opts.MapFrom(src => src.Code)) 
       .ForMember(dest => dest.Charge, 
          opts => opts.MapFrom(src => src.Amount)) 
       .ForMember(dest => dest.CourierCharge, 
          opts => opts.MapFrom(src => src.DeliveryCharge)); 

    CreateMap<Core.Domain.Order, OrderViewModel>() 
        .ForMember(dest => dest.Product, 
           opts => opts.MapFrom(src => src.Product)) 
        .ForMember(dest => dest.Price, 
           opts => opts.MapFrom(src => new List<Price>())); 
     } 
    } 

然後在我的控制，我有：

var list = _productRepository.GetProducts(); 
Mapper.Map<Order, OrderViewModel>(list); 

但價格屬性爲空（NOT NULL）作爲該屬性已被實例化。只是沒有記錄。

我在做什麼錯？

Answer 1

.ForMember(dest=>dest.Price, opts=>opts.MapFrom(src=>new List<Price>())); 

意思是你正在設置dest.Price = new List（）;試試這個：

.ForMember(dest=>dest.Price, opts=>opts.MapFrom(src=>src.Product.Select(p=>new Price {Charge = p.Amount,CourierCharge = p.DeliveryCharge,UniqueProductCode = p.Code})));