将对象传递给 AutoMapper 映射 [英] Pass Objects to AutoMapper Mapping

问题描述

我正在使用 AutoMapper，被映射到的实体的一些值是我当前方法中的变量.我试过谷歌它，但无济于事.我可以将一组 KeyValue Pairs 或一个对象或其他东西传递给我的映射以使其使用这些值吗?

I am working with AutoMapper and some of the values for the entity being mapped to are variables in my current method. I have tried to Google it but to no avail. Can I pass a set of KeyValue Pairs or an object or something to my mapping to have it use those values?

//comment variable is a Comment class instance
var imageComment = AutoMapper.Mapper.Map<Data.ImageComment>(comment);
//I want to pass in imageId so I dont have to manually add it after the mapping
imageComment.ImageId = imageId;

推荐答案

AutoMapper 开箱即用地处理这种键值对方案.

AutoMapper handles this key-value pair scenario out of the box.

Mapper.CreateMap<Source, Dest>()
    .ForMember(d => d.Foo, opt => opt.ResolveUsing(res => res.Context.Options.Items["Foo"]));

然后在运行时:

Mapper.Map<Source, Dest>(src, opt => opt.Items["Foo"] = "Bar");

深入研究上下文项目有点冗长，但你去了.

A bit verbose to dig into the context items but there you go.

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