CODEWITHSUNDEEP
automapper
nabeelfarid
nabeelfarid

Reputation: 4224

Mapping only few properties instead of all using Automapper

I have recently started using automapper and it has work fine for me so far. I have been mapping domain objects to corresponding dtos and by default all source properties get mapped to their matching destination properties. I have been using code as follows: 

Mapper.CreateMap<Node, NodeDto>();
var nodeDto = Mapper.Map<Node, NodeDto>( node );

Now I have got into a situation where I would like to map only some of the properties of the source object. There are collection properties in the source object that I do not want to be mapped to the matching destination properties. Is there a way to achieve that?

Upvotes: 8

Views: 10637

Answers (2)

ExceptionLimeCat
ExceptionLimeCat

Reputation: 6400

The marked answer is appropriate if you want to ignore a small set of properties. If you need to map a small set of properties using a TypeConverter might be more appropriate.

// Configure map using TypeConverter
cfg.CreateMap<MySource, MyDestination>()
                .ConvertUsing(new MyTypeConverter());


public class MyTypeConverter : ITypeConverter<MySource, MyDestination>
{
    
    public MyTypeConverter() : base()
    {
        
    }

    public MyDestination Convert(MySource source, MyDestination destination, ResolutionContext context)
    {            
         MyDestination myObj = destination == null ? new MyDestination() : destination;

         myObj.Prop1 = source.Prop1;
         myObj.Prop2 = source.Prop2;

         return myObj;            
    }
}

Upvotes: 1

Darin Dimitrov
Darin Dimitrov

Reputation: 1038720

You could specify the properties to ignore like this:

Mapper.CreateMap<Node, NodeDto>()
      .ForMember(dest => dest.SomePropToIgnore, opt => opt.Ignore())

Upvotes: 14

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