C# 自动映射基类映射

对于AutoMapper，我已经实现了以下功能，但有重复的映射代码：

cfg.CreateMap<RmsOelEntryUnlinkedPersonInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked>()
    .ForMember(dest => dest.DateOfBirth, opts => opts.MapFrom(src => FormatDateType(src.DateOfBirth)))
    .ForMember(dest => dest.EffectiveFromTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveFromTime)))
    .ForMember(dest => dest.EffectiveToTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveToTime)));

cfg.CreateMap<RmsOelEntryUnlinkedAddressInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked>()
    .ForMember(dest => dest.EffectiveFromTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveFromTime)))
    .ForMember(dest => dest.EffectiveToTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveToTime)));

cfg.CreateMap（）
.FormMember（dest=>dest.DateOfBirth，opts=>opts.MapFrom（src=>FormatDateType（src.DateOfBirth）））
.FormMember（dest=>dest.EffectiveFromTime，opts=>opts.MapFrom（src=>FormatDateTimeType（src.EffectiveFromTime）））
.FormMember（dest=>dest.EffectiveToTime，opts=>opts.MapFrom（src=>FormatDateTimeType（src.EffectiveToTime））；
cfg.CreateMap（）
.FormMember（dest=>dest.EffectiveFromTime，opts=>opts.MapFrom（src=>FormatDateTimeType（src.EffectiveFromTime）））
.FormMember（dest=>dest.EffectiveToTime，opts=>opts.MapFrom（src=>FormatDateTimeType（src.EffectiveToTime））；

RMSOELENTRYUNLinkedPersonInputTo

和

RMSOELENTRYUNLinkedAddressInputTo

都是从

RmsOelEntryInvolvedEntityBaseDto

继承而来的，这个基类具有属性

EffectiveFromTime

和

EffectiveToTime

我不希望必须重复映射

EffectiveFromTime

和

EffectiveToTime

，如上所示

但是，

addNewoElentRyinVolvedEntities UnlinkedinVolvedPersonUnlinked

和

addNewoElentRyinVolvedEntities UnlinkedinVolvedAddressUnlinked

是自动生成的，没有基类。因此，我不知道如何使用AutoMapper的“包含”映射选项

---

我如何优化它以消除重复映射？

我也遇到过类似的情况，并求助于助手扩展方法。我为您的案例定制了：

internal static class CommonMapperExtensions
{
     internal static IMappingExpression<TSource, TDestination> MapCommonFields<TSource, TDestination>(this IMappingExpression<TSource, TDestination> m)
         where TSource : RmsOelEntryInvolvedEntityBaseDto
         where TDestination : IEffective
     {
         return m
            .ForMember(dest => dest.EffectiveFromTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveFromTime)))
            .ForMember(dest => dest.EffectiveToTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveToTime)));                
     }
}

公共类TBaseModel
{
public void ConfigureMapFrom（IMappingExpression映射）
{
//…映射
}
}
公共类TModel:TBaseModel
{
public void ConfigureMapFrom（IMappingExpression映射）
{
mapping.IncludeBase（）；
//…其他映射
}
}

谢谢。在您的扩展方法中，我看到目标被约束为AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked，但它还需要映射AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked。如果生成的类是部分的，那么这将是一个开放的问题。当然，如果这种情况比两个映射更常见，那么这样做会有回报。它们确实是部分的，并且您的解决方案工作得很好；尽管我需要修改代码以引用扩展方法中的“m”对象。非常感谢。太好了，我也修复了答案中的错误。你们能为你们的答案提供更多的上下文吗？

cfg.CreateMap<RmsOelEntryUnlinkedPersonInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked>()
    .MapCommonFields()
    .ForMember(dest => dest.DateOfBirth, opts => opts.MapFrom(src => FormatDateType(src.DateOfBirth)));

cfg.CreateMap<RmsOelEntryUnlinkedAddressInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked>()
    .MapCommonFields();

public interface IEffective 
{
     DateTime EffectiveFromTime {get; set;}
     DateTime EffectiveToTime {get; set;}
}

public partial AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked
    : IEffective { }

public partial AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked
    : IEffective { }

public class TBaseModel
{
    public void ConfigureMapFrom(IMappingExpression<TEntity, TBaseModel> mapping)
    {
        // ... mappings
    }
}

public class TModel : TBaseModel
{
    public void ConfigureMapFrom(IMappingExpression<TEntity, TModel> mapping)
    {
        mapping.IncludeBase<TEntity, TBaseModel>();

        // ... other mappings
    }
}