AutoMapper issue

Question

Trying to automap some objects.
Source objects has properties with _ before name, destination objects - have not. Is it possible to implement ONE map creation, that automapper would map all _properties to properties
for all source types.

class MyMapper<TFrom, TTo>{
    TTo PerformMap(TFrom fromObject){
        Mapper.CreateMap<From, To>(); // ???
        TTo result = Mapper.Map<From, To>(fromObject);
        //result.Id.ShouldBe(value from TFrom._Id);
        return result;
    }
}

class From
{
    public int _Id { get; set; }
    public string _Name { get; set; }
}

class To
{
    public int Id { get; set; }
    public string Name { get; set; }
}

score 9 · Accepted Answer · edited Feb 11 '13 at 16:41

9

Something I added recently to AutoMapper might help you - custom naming conventions. If you check out the trunk (R107), look around for INamingConvention. Right now, I have two naming conventions (PascalCase and lower_case_underscore), but it's really just a matter of figuring out the right RegEx to get you going:

INamingConvention.cs

Right now, naming conventions are global and profile-scoped. Since this feature is new, there isn't any documentation other than the tests.

edited Feb 11 '13 at 16:41

Jim W

3
3

answered Aug 01 '09 at 22:25

Jimmy Bogard

26,045
5
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I'm not using AM at the moment, but nice to know about this feature. :) – Arnis Lapsa Aug 02 '09 at 08:16
1

the link in this answer gives a 404, can you please update? Thanks for the awesome work Jimmy! – shanabus Feb 15 '12 at 16:29
Does this work with IDataReader sources? I am trying to map DataTable in lower_case_underscore to an object w/ properties in PascalCase but can't seem to get it to work. – Merritt Mar 27 '15 at 14:45

score 2 · Answer 2 · answered Apr 17 '17 at 17:42

2

This is how I'm doing it

Mapper.Initialize(cfg =>
        {
            cfg.RecognizeDestinationPrefixes(new []{"_"});
            cfg.RecognizePrefixes(new[] { "_" });

            cfg.CreateMap<To, From>().ReverseMap();
        });

answered Apr 17 '17 at 17:42

Halter

48
2
6
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score 0 · Answer 3 · answered Apr 27 '09 at 01:33

0

For this you could add a custom mapping to solve this particular case:

Mapper.CreateMap<From, To>()
   .ForMember( dest => dest.Id, opt => opt.MapFrom( src => src._Id ) )
   .ForMember( dest => dest.Name, opt => opt.MapFrom( src => src._Name ) );

answered Apr 27 '09 at 01:33

MotoWilliams

1,538
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That`s the effect i need, but... I wanted that to be more generic. Like saying - automapper, map those 2 objects, and ignore underscore of prop name, if it`s first symbol in name. Otherwise - i have to pay attention for all object pairs. – Arnis Lapsa Apr 29 '09 at 07:59
This is unrealistic in real-world applications where there are potentially hundreds of POCOs – Captain Kenpachi Mar 08 '19 at 11:04

AutoMapper issue

3 Answers3

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