自动映射器映射对象

本文介绍了自动映射器映射对象的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

基于此问题的此附加要求一个来源到多个目的地

This additional requirement based on this question one source to mutiple destination

class Dest1 { string prop1; string prop2; string prop3; pubic List<Dest3> Dests3 {get;set;} } class Dest3 { string prop7; string prop8; } class Source2 { string prop7; string prop8; }

我需要在自动映射器中将Source2映射到Dest1(Dest3是一个列表，也需要映射)

我的制图课:(不起作用)

My mappping class:(not working)

CreateMap<Source2, Dest3>(); CreateMap<Source2, Dest1>() .ForMember(d => d.Dests3 , opt => opt.MapFrom(s => s));

推荐答案

因此，假设发生此映射时，Dests3应该是单个项目列表，则其配置应类似于以下内容:

So, assuming that when this mapping occurs Dests3 should be a single item list, the configuration for this should look something like this:

var configuration = new MapperConfiguration(cfg => // Mapping Config cfg.CreateMap<Source2, Dest1>() .ForMember(dest => dest.prop1, opt => opt.Ignore()) .ForMember(dest => dest.prop2, opt => opt.Ignore()) .ForMember(dest => dest.prop3, opt => opt.Ignore()) .ForMember(dest => dest.Dests3, opt => opt.MapFrom(src => new List<Dest3> { new Dest3 { prop7 = src.prop7, prop8 = src.prop8 } })); // Check AutoMapper configuration configuration.AssertConfigurationIsValid();

然后，您可以使用映射器在需要的任何地方处理映射，就像这样:

Then, you can use the mapper to handle the mapping wherever you need, like so:

public class Foo { private IMapper _mapper; public Foo(IMapper mapper) { _mapper = mapper; } // Map Source2 -> Dest1 public Dest1 Bar(Source2 source) { return _mapper.Map<Dest1>(source); } }