Mapping separate fields into one string using Automapper

Question

I have spent a couple of days trying to track this down without any luck.

I have a table of addresses. Each row has 4 address fields. I want to map them to another object that has one field that is a single string made up of the 4 fields, but (there's always a but), if one of the fields contains a null or an empty string I want to ignore it.

eg The address table contains :- Address1 = House Number Address2 = Street Address3 = Address4 = Town

New object would contain the string :- House Number, Street, Town.

As requested this is where I am at :-

The AutoMapper config file

public static class AutoMapperConfig
{
    public static void Configure()
    {
        Mapper.Initialize(cfg =>
        {
            cfg.AddProfile(new AddressSearchList_ToResponse_Profile());
        });
    }
}

The Profile Definition :

    public class AddressSearchList_ToResponse_Profile : Profile
{
    protected override void Configure()
    {
        Mapper.CreateMap<Address, AddressSearchResponseDto>()
            .ConvertUsing<ConvertAddressToSearchList>();

        Mapper.AssertConfigurationIsValid();

        //This is as far as I get - what am I missing

    }
}

And finally the conversion routine (admittedly not the slickest code ever):

public class ConvertAddressToSearchList : ITypeConverter<Address, AddressSearchResponseDto>
{

    public AddressSearchResponseDto Convert(ResolutionContext context)
    {

        string newAddress = string.Empty;
        Address oldAddress = (Address)context.SourceValue;
        int addressId = oldAddress.Id;

        newAddress = oldAddress.AddressLine1;

        if (!String.IsNullOrEmpty(oldAddress.AddressLine2))
        {
            newAddress += ", " + oldAddress.AddressLine2;
        }

        if (!String.IsNullOrEmpty(oldAddress.AddressLine3))
        {
            newAddress += ", " + oldAddress.AddressLine3;
        }

        if (!String.IsNullOrEmpty(oldAddress.AddressLine4))
        {
            newAddress += ", " + oldAddress.AddressLine4;
        }

        if (!String.IsNullOrEmpty(oldAddress.County))
        {
            newAddress += ", " + oldAddress.County;
        }

        if (!String.IsNullOrEmpty(oldAddress.Postcode))
        {
            newAddress += ".  " + oldAddress.Postcode;
        }


        AddressSearchResponseDto searchAddress = new AddressSearchResponseDto { Id = addressId, Address = newAddress };

        return searchAddress;

    }

Thanks

Steve

Answer 1

Maybe, it's just me, but (there's always a but), what is the question?

I think it's already converted, you just missing the code to actually mapping the source entity and display the result to monitor, like this:

AddressSearchResponseDto result = Mapper.Map<Address,AddressSearchResponseDto>(source); 
Console.WriteLine(result.newAddress); 

Answer 2

To fix this change the Profile Definition to :

public class AddressSearchList_ToResponse_Profile : Profile
{
    protected override void Configure()
    {
        Mapper.CreateMap<Address, AddressSearchResponseDto>()
            .ConvertUsing<ConvertAddressToSearchList>();

    }
}

Then in the code that calls the automapper gubbins you need to do this :

var query = from a in addressRepository.GetAll() select a;

IList<AddressSearchResponseDto> result = Mapper.Map<IList<Address>, IList<AddressSearchResponseDto>>(query.ToList());

result now holds the correct data.

Thanks you very much for your help guys.