CODEWITHSUNDEEP
c#automapper
neildt
neildt

Reputation: 5362

Why do I get exception for AutoMapper int to int[] array

I'm using the AutoMapper object mapper, but am getting the exception "Custom configuration for members is only supported for top-level individual members on a type."

Basically I have 

public class Obj1 
{ 
    public int Id {get;set;} 
}

and 

public class Obj2 
{ 
    public int[] Ids { get; set; } 
}

Th exception occurs when I try to create the mapping like;

Mapper
    .CreateMap<Obj1, Obj2>()
    .ForMember(d => d.Ids[0], o => o.MapFrom(s => s.Id)
);

Why is this happening ? What I'm wanting to achieve is when the objects are mapping that the single int Id in the source is mapped to the first element in the destination int array e.g [0]. The complete exception is

type="AutoMapper.AutoMapperConfigurationException" message="Custom configuration for members is only supported for top-level individual members on a type." source="AutoMapper"
detail="AutoMapper.AutoMapperConfigurationException: Custom configuration for members is only supported for top-level individual members on a type. at AutoMapper.Impl.ReflectionHelper.FindProperty(LambdaExpression lambdaExpression) at AutoMapper.MappingExpression2.ForMember(Expression1 destinationMember, Action`1 memberOptions) at ...

Upvotes: 1

Views: 2414

Answers (1)

ajg
ajg

Reputation: 1753

You are close - just need to make the array instead of setting a individual member

Mapper.CreateMap<Obj1, Obj2>().ForMember(d => d.Ids, o => o.MapFrom(s => new[]{s.Id}));

Upvotes: 6

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