来自另一个不同类型的内部列表的 C# Automapper 内部列表

Question

我正在尝试映射类似于此模型的内容：

class Source {
   ...
   SubSource subSource;
}

class SubSource {
   ...
   List<SourceListItem> list;
   SomeInfo someInfo;
   ...
}

class SomeInfo {
   string name;
   ...
}

class SourceModel {
   ...
   SomeInfoModel someInfoModel;
   ...
}

class SomeInfoModel {
   string name;
   List<SourceListItemModel> list;
   ...
}

我需要的是将"SubSource.List"映射到"SomeInfoModel.List"。我能够正确映射每个属性，但映射后列表始终为空，并且在执行过程中没有发生错误。

我有以下映射配置：

CreateMap<SourceListItem, SourceListItemModel>()
CreateMap<SomeInfo, SomeInfoModel>()
CreateMap<Source, SourceModel>()
 ...
 .ForPath(dest => dest.someInfoModel.list, opt => opt.MapFrom(src => 
 src.subSource.list))
...

Answer 1

执行您的代码时，对 configuration.AssertConfigurationIsValid(); 的调用会抛出一个异常，其中清楚地描述了您运行遇到的问题

Unmapped members were found. Review the types and members below. Add a custom mapping expression, ignore, add a custom resolver, or modify the source/destination type.

For no matching constructor, add a no-arg ctor, add optional arguments, or map all of the constructor parameters

SomeInfo -> SomeInfoModel (Destination member list) SomeInfo -> SomeInfoModel (Destination member list)

Unmapped properties: list

可以参考the documentation

Answer 2

试图重现，但对我来说 list 属性的映射有效。

var config = new MapperConfiguration(cfg =>
{
    cfg.CreateMap<SourceListItem, SourceListItemModel>();
    cfg.CreateMap<SomeInfo, SomeInfoModel>();
    cfg.CreateMap<Source, SourceModel>()
        .ForPath(dest => dest.someInfoModel.list, opt => opt.MapFrom(src =>
         src.subSource.list));
    });

var source = new Source()
{
    subSource = new SubSource()
    {
        list = new List<SourceListItem>()
        {
            new SourceListItem() { Text1 = "text1" },
            new SourceListItem() { Text1 = "text2" },
        }
    }
};
var mapper = new Mapper(config);
var model = mapper.Map<SourceModel>(source);

使用的型号：

public class SourceListItem
{
    public string Text1 { get; set; }
}
public class SourceListItemModel
{
    public string Text1 { get; set; }
}

来自另一个不同类型的内部列表的 C# Automapper 内部列表

C# Automapper inner list from another inner list of different type

c#

automapper

.net-core