自动映射器 - 使用集合映射对象

Question

使用Automapper，我需要映射以下类的对象

public class RemoteClass
{
    public IEnumerable<RemoteDetails> collection{get; set;};

    public int RemoteFieldA{get; set;}

    public int RemoteFieldB{get; set;}      
}


public class LocalClass
{
    public IEnumerable<LocalDetails> collection{get; set;};

    public int LocalFieldA{get; set;}

    public int LocalFieldB{get; set;}       
}

我的配置和映射应该是什么？

Answer 1

只需定义RemoteDetails和LocalDetails之间的映射即可。 AutoMapper足够聪明，可以处理他知道如何映射的类型集合。假设这两个类有字段C：

Mapper.CreateMap<RemoteDetails, LocalDetails>()
      .ForMember(ld => ld.LocalFieldC, opt => opt.MapFrom(rd => rd.RemoteFieldC));

Mapper.CreateMap<RemoteClass, LocalClass>()
      .ForMember(lc => lc.LocalFieldA, opt => opt.MapFrom(rc => rc.RemoteFieldA))
      .ForMember(lc => lc.LocalFieldB, opt => opt.MapFrom(rc => rc.RemoteFieldB));

使用这些映射，您可以从RemoteClass映射到LocalClass：

RemoteClass remote = new RemoteClass {
    RemoteFieldA = 42,
    RemoteFieldB = 100,
    collection = new [] { 
        new RemoteDetails { RemoteFieldC = "Foo" },
        new RemoteDetails { RemoteFieldC = "Bar" }
    }
};

var local = Mapper.Map<LocalClass>(remote);

结果：