AutoMapper How To Map Object A To Object B Differently Depending On Context

Question

Calling all AutoMapper gurus!

I\'d like to be able to map object A to object B differently depending on context at runtime. In particular, I\'d like to ignore certai

Answer 1

Just to complement Jimmy's answer here's the code needed to use AutoMapper without the static Mapper

As of version 4.2.1 Automapper has a sanctioned non static mapper and configuration (thanks Jimmy!).

var config = new MapperConfiguration(cfg => {
    cfg.CreateMap();
});

var mapper = config.CreateMapper();

There are many other useful options (such as profiles) in the new releases for creating different mapper instances. You can get all the details in the official documentation

(correct for version 4.1.1)

// Configuration
AutoMapper.Mappers.MapperRegistry.Reset();
var autoMapperCfg = new AutoMapper.ConfigurationStore(new TypeMapFactory(), AutoMapper.Mappers.MapperRegistry.Mappers);
var mappingEngine = new AutoMapper.MappingEngine(autoMapperCfg);
autoMapperCfg.Seal();

//Usage example
autoMapperCfg.CreateMap();

var b = mappingEngine.Map(a);

(correct for version 3.2.1)

// Configuration
var platformSpecificRegistry = AutoMapper.Internal.PlatformAdapter.Resolve();
platformSpecificRegistry.Initialize();

var autoMapperCfg = new AutoMapper.ConfigurationStore(new TypeMapFactory(), AutoMapper.Mappers.MapperRegistry.Mappers);
var mappingEngine = new AutoMapper.MappingEngine(autoMapperCfg);

//Usage example
autoMapperCfg.CreateMap();

var b = mappingEngine.Map(a);

(correct for version 2.2.1)

// Configuration
var autoMapperCfg = new AutoMapper.ConfigurationStore(new AutoMapper.TypeMapFactory(), AutoMapper.Mappers.MapperRegistry.AllMappers());
var mappingEngine = new AutoMapper.MappingEngine(autoMapperCfg);

//Usage example
autoMapperCfg.CreateMap();

var b = mappingEngine.Map(a);