C# 自动映射属性保持为空

似乎我无法使嵌套映射正常工作

读完后：应该很容易

我有以下课程：

public class CatalogVehicle : VehicleBase
{
    public string Type { get; set; }
    public int Year { get; set; }
    public VehicleSpecification VehicleSpecification { get; set; } = new VehicleSpecification();
} //removed some properties for readability

public class VehicleSpecification
{
    public Engine Engine { get; set; } = new Engine();
    public Transmission Transmission { get; set; } = new Transmission();
    public int Co2 { get; set; }
    public int Weight { get; set; }
} //again removed some more properties (all classes)

对于映射：

CreateMap<VehicleAndQuote, CatalogVehicle>()
    .ForMember(catalogVehicle => catalogVehicle.Id,
        source => source.MapFrom(vehicleAndQuote => vehicleAndQuote.Quote.QuotationIdentifier.Trim()))
    .ForMember(catalogVehicle => catalogVehicle.Make,
        source => source.MapFrom(vehicleAndQuote => vehicleAndQuote.Vehicle.VehicleMakeName))
    .ForMember(catalogVehicle => catalogVehicle.Model,
        source => source.MapFrom(vehicleAndQuote => vehicleAndQuote.Vehicle.VehicleModelTypeName))
    .ForMember(catalogVehicle => catalogVehicle.VehicleSpecification, opt => opt.Ignore()); //removed some lines

CreateMap<VehicleAndQuote, VehicleSpecification>()
    .ForMember(vehicleSpecification => vehicleSpecification.Co2, src => src.MapFrom(vehicleAndQuote => vehicleAndQuote.Vehicle.Co2.ToSafeInt()))
    .ForMember(vehicleSpecification => vehicleSpecification.Weight, src => src.MapFrom(vehicleAndQuote => vehicleAndQuote.Vehicle.Weight.ToSafeInt()))
    .ForMember(vehicleSpecification => vehicleSpecification.Rating, opt => opt.Ignore())
    .ForMember(vehicleSpecification => vehicleSpecification.Tyres, opt => opt.Ignore()) //removed some lines as well

CreateMap<VehicleAndQuote, Engine>()
    .ForMember(engine => engine.Displacement, opt => opt.Ignore())
    .ForMember(engine => engine.Fuel, src => src.MapFrom(vehicleAndQuote => vehicleAndQuote.Vehicle.FuelType))
    .ForMember(engine => engine.Power, src => src.ResolveUsing(GetEnginePower))
    .ForMember(engine => engine.Cylinders, src => src.MapFrom(vehicleAndQuote => vehicleAndQuote.Vehicle.Cylinders));

//etc

CreateMap（）
.FormMember（catalogVehicle=>catalogVehicle.Id，
source=>source.MapFrom（vehicleAndQuote=>vehicleAndQuote.Quote.QuotationIdentifier.Trim（））
.FormMember（catalogVehicle=>catalogVehicle.Make，
source=>source.MapFrom（vehicleAndQuote=>vehicleAndQuote.Vehicle.VehicleMakeName））
.FormMember（catalogVehicle=>catalogVehicle.Model，
source=>source.MapFrom（vehicleAndQuote=>vehicleAndQuote.Vehicle.VehicleModelTypeName））
.FormMember（catalogVehicle=>catalogVehicle.VehicleSpecification，opt=>opt.Ignore（））//删除了一些行
CreateMap（）
.FormMember（vehicleSpecification=>vehicleSpecification.Co2，src=>src.MapFrom（vehicleAndQuote=>vehicleAndQuote.Vehicle.Co2.ToSafeInt（））
.FormMember（vehicleSpecification=>vehicleSpecification.Weight，src=>src.MapFrom（vehicleAndQuote=>vehicleAndQuote.Vehicle.Weight.ToSafeInt（））
.FormMember（vehicleSpecification=>vehicleSpecification.Rating，opt=>opt.Ignore（））
.FormMember（vehicleSpecification=>vehicleSpecification.Tyres，opt=>opt.Ignore（））//还删除了一些行
CreateMap（）
.ForMember（engine=>engine.Displacement，opt=>opt.Ignore（））
.ForMember（发动机=>发动机.Fuel，src=>src.MapFrom（车辆引用=>vehicleAndQuote.Vehicle.FuelType））
.ForMember（engine=>engine.Power，src=>src.ResolveUsing（GetEnginePower））
.ForMember（engine=>engine.汽缸，src=>src.MapFrom（vehicleAndQuote=>vehicleAndQuote.Vehicle.汽缸））；
//等

正如您所看到的，我忽略了一些属性，因为否则我会得到未映射属性错误。在阅读本文之后，只要映射了所有类，它就应该可以工作

---

我调用的方法如下：

var vehicle=\u mapper.Map（vehicleAndQuote）您需要为嵌套类配置映射，而不是忽略它们：

.ForMember(catalogVehicle => catalogVehicle.VehicleSpecification, src => src.MapFrom(vehicleAndQuote => vehicleAndQuote);

而不是

.ForMember(catalogVehicle => catalogVehicle.VehicleSpecification, opt => opt.Ignore());

其他映射也一样
完美！我知道忽略是错误的，但我不知道应该是什么。Thnx！