AutoMapper 5.2 how to configure

Question

What is the correct way to configure AutoMapper for global use.

I want to set it once and then used though out the app.

i have a strong feeling this is wrong. in fact i know this is wrong as this calls an new instance. I want a global config and then how do you call it. Can not find a good example!

this is what ive got: but its not what im wanting

public static class AutoMapperConfig
{
      public static IMapper GetMapper()
      {
          var config = new MapperConfiguration(cfg => {
              cfg.CreateMap<R_Logo, LogoDto>();
              //lots more maps...?
          });

          IMapper mapper = config.CreateMapper();
          return mapper;
      }
}

and then usage:

  var imapper = AutoMapperConfig.GetMapper();
  var dest = imapper.Map<R_Logo, LogoDto>(logo);

UPDATE based on: pinkfloydx33

Call this once and then the config is done.

public static class AutoMapperConfig
{
   public static void RegisterMappings()
   {
        AutoMapper.Mapper.Initialize(cfg => {
           cfg.CreateMap<R_Logo, LogoDto>();
            /* etc */
        });
    }
}

Answer 1

Set this in your StartupConfig or StartUp file.

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
       // Web API configuration and services    
        .....

        MappingDTOModelToModel.Configure();
    }
}

Configuration of Mappings,

public static class MappingDTOModelToModel
{       
     private static void Configure()
     {
         Mapper.Initialize(cfg =>
         {
             cfg.CreateMap<R_Logo, LogoDto>()
                 .ForMember(x => x.ID,
                            m => m.MapFrom(a => a.ID))
                 .ForMember(x => x.FirstName,
                            m => m.MapFrom(a => a.FirstName)).ReverseMap();                    
         }
     }
 }

Calling it in a method,

public class MyService
{
    public void MyMethod(var model)
    {
        var myModel = Mapper.Map<LogoDto, R_Logo>(model);  
    }
}

Hope this helps,

Answer 2

Here is the steps to configure the automapper in asp.net core mvc.

1. Create the mapping profile class which extends from Profile

 public class ClientMappingProfile : Profile
 {
     public ClientMappingProfile ()
     {
         CreateMap<R_Logo, LogoDto>().ReverseMap();
     }
 }

2. Create the AutoMapper Configuration Class and add your mapping profile class here.

public class AutoMapperConfiguration
{
   public MapperConfiguration Configure()
   {
        var config = new MapperConfiguration(cfg =>
        {
            cfg.AddProfile<ClientMappingProfile>();
        });
        return config;
    }
}

3. How we can use it.

       var config = new AutoMapperConfiguration().Configure();
       var iMapper = config.CreateMapper();

       var dest = iMapper.Map<R_Logo, LogoDto>(logo);