How do i convert a int to an enum and a string using automapper and int from DB

Question

Could someone please explain how I can use Automapper to map from DB int value to a string, using Enums as the collection.

I have the following

Enum

public enum Status { Open, Closed }

EF 4.1 Domain Model

public class MyEntity
{
    ...
    public int StatusId { get; set; }
    public virtual Status Status { get; set; }    
}

Dto being used on website

public class MyEntityDto
{
    public string Status { get; set; }
}

Current Automapper mappings

Mapper.CreateMap<int, Status>().ConvertUsing<EnumConverter<Status>>();
Mapper.CreateMap<Enum, string>().ConvertUsing(src => src.ToString());

Mapper.CreateMap<MyEntity, MyEntityDto>()
                .ForMember(d => d.Status, o => o.MapFrom(y => y.StatusId))

The EnumConverter in first line converts the int to a status fine without problem, but how do i convert the int or Status to the string in the DTO? Im lost any help would be appreciated.

I realise there are 2 conversions required here, the id to the enum when the data is pulled from the database and enum needs populating and then the enum to string needs doing

Cheers

theB3RV · Accepted Answer · 2015-05-07 16:15:02Z

65

Mapper.CreateMap<MyEntity, MyEntityDto>()
      .ForMember(destination => destination.Status, 
                 opt => opt.MapFrom(source => Enum.GetName(typeof(Status), source.StatusId)));

Also you don't need mapping from int to Status enum.

edited May 7, 2015 at 16:15

theB3RV

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answered Nov 30, 2012 at 8:11

Sergey Berezovskiy

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2 Comments

Mark Over a year ago

Awesome Thanks for your help, so simple in the end :)

Javad Norouzi Over a year ago

Also may this thread be usefull so : stackoverflow.com/questions/9721466/…

carloswm85 · Accepted Answer · 2025-01-22 12:47:49Z

0

In case you need int to enum conversion, you can use explicit cast:

Mapper.CreateMap<MyEntity, MyEntityDto>()
      .ForMember(destination => destination.Status, 
                 opt => opt.MapFrom(source => (Status)source.StatusId));

The cast (Status) tells the compiler to interpret the value integer value from source.StatusId as a value of the Status enum.

answered Jan 22 at 12:47

carloswm85

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1 Comment

Lucian Bargaoanu Jan 22 at 14:21

Both your case and the initial case are default conversions, you don't need ForMember.

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