自动将枚举映射到Entity Framework 5.0复杂类型错误

Question

So the error is this: Expression must resolve to top-level member and not any child object's properties.

Remuneration in the DTO is a Enum. ContractEntity uses a Remuneration that is a ComplexType.

The code throwing the error:

Mapper.CreateMap<ContractDTO, ContractEntity>()
            .ForMember(d => d.Remuneration.ContractType, s => s.MapFrom(z => z.ContractType))
            .ForMember(d => d.Remuneration.Currency, s => s.MapFrom(z => z.Currency))
            .ForMember(d => d.Remuneration.RateUnit, s => s.MapFrom(z => z.RateUnit));

Entity Framework complex type:

 [ComplexType]
public class Remuneration
{
    public decimal Amount { get; set; }
    public int Currency { get; set; }
    public int RateUnit { get; set; }
    public int ContractType { get; set; }    
}

Because I want the destination (ContractEntity) to use the integer values, I thought I could just cast the source enum to the destination integer like this:

.ForMember(d => d.Remuneration.ContractType, s => s.MapFrom(z => (int)z.ContractType))

.. obviously I cant, and was hoping that someone could clarify why this doesn't work..

Answer 1

If you have problmes with complex type mapping, you can implement manual mapping based on AutoMapper:

Mapper.CreateMap<PatternDto, PatternModel>().ConvertUsing(pattern =>
                {
                    if(pattern == null) return new PatternModel();
                    return new PatternModel
                        {
                            EmailPattern = pattern.EmailPattern,
                            SmsPattern = pattern.SmsPattern
                        };
                });

Good luck!