Getting an exception with AutoMapper

Question

I'm unit testing a method which uses automapper to map a class from my domain to a linq to sql class. Roughly, the classes and mapping are below (The SupplierEligibilityAllocated is a L2S auto generated class).

public class SupplierEligibilityTransactionByQuantity
{
    public decimal Eligibility { get; private set; }
    public decimal CoreValue { get; private set; }
    public int? TransactionId { get; private set; }
    public SupplierTransactionStatus Status { get; private set; }
    public int? DebitId { get; set; }
    public int ManifestId { get; private set; }
}

public partial class SupplierEligibilityAllocated
{
 private int _SupplierEligibilityCreditId;
 private int _ManifestId;
 private System.Nullable<int> _QuantityApplied;
 private System.Nullable<decimal> _AmountApplied;
 private System.Nullable<decimal> _CoresReservedByAmount;
 private System.DateTime _InsertDate;
 private EntityRef<Manifest> _Manifest;
 private EntityRef<SupplierEligibilityCredit> _SupplierEligibilityCredit;
}

private static void Map_SupplierEligibilityTransactionByQuantity_To_SupplierEligibilityAllocated()
{
    Mapper.CreateMap<EligibilityTransactionByQuantity, SupplierEligibilityAllocated>()
        .ForMember(dest => dest.SupplierEligibilityCreditId, opt => opt.MapFrom(src => src.TransactionId))
        .ForMember(dest => dest.ManifestId, opt => opt.MapFrom(src => src.ManifestId))
        .ForMember(dest => dest.QuantityApplied, opt => opt.MapFrom(src => Convert.ToInt32(src.Eligibility)))
        .ForMember(dest => dest.AmountApplied, opt => opt.Ignore())
        .ForMember(dest => dest.CoresReservedByAmount, opt => opt.Ignore())
        .ForMember(dest => dest.InsertDate, opt => opt.MapFrom(src => DateTime.UtcNow))
        .ForMember(dest => dest.Manifest, opt => opt.Ignore())
        .ForMember(dest => dest.SupplierEligibilityCredit, opt => opt.Ignore());
}

When the method executes the mapping, though, it throws the following exception.

Trying to map SupplierEligibilityTransactionByQuantity to SupplierEligibilityAllocated.
Missing type map configuration or unsupported mapping.
Exception of type 'AutoMapper.AutoMapperMappingException' was thrown.

at AutoMapper.MappingEngine.AutoMapper.IMappingEngineRunner.Map(ResolutionContext context)
at AutoMapper.MappingEngine.Map(Object source, Type sourceType, Type destinationType)
at AutoMapper.MappingEngine.Map[TSource,TDestination](TSource source)
at AutoMapper.Mapper.Map[TSource,TDestination](TSource source)

I verified that I am creating the mapping before the test and I called Mapper.AssertConfigurationIsValid() without any problems. I also manually did the mapping without any problems. Anybody have an idea as to what could be causing this?

for any1 there is always the possibility u put the IgnoreDataMember attr, and that means that outside ur class u cant see it, that was my problem with this ex — bresleveloper
– bresleveloper, Commented Apr 22, 2013 at 9:07

The Matt · Accepted Answer · 2009-12-21 21:28:09Z

10

It appears you are specifying the wrong type on your call to Mapper.CreateMap

Try doing something like the following:

Mapper.CreateMap<SupplierEligibilityTransactionByQuantity, SupplierEligibilityAllocated>()

answered Dec 21, 2009 at 21:28

The Matt

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1 Comment

JChristian Over a year ago

Doh, I overlooked the obvious. I was mapping the wrong type, which explains the exception and why the AssertConfigurationIsValid() wasn't having a problem.

abatishchev · Accepted Answer · 2015-08-24 19:04:05Z

0

If any one using Mapper.Map() check your mapping class & table/store procedure properly.

public static CustomerLedgerViewModel ToModel(this DJBL_tblCustomerCurrentLedger obj)
{
    return Mapper.Map<DJBL_tblCustomerCurrentLedger, CustomerLedgerViewModel>(obj);
}

public static DJBL_tblCustomerCurrentLedger ToEntity(this CustomerLedgerViewModel model)
{
    return Mapper.Map<CustomerLedgerViewModel, DJBL_tblCustomerCurrentLedger>(model);
}

edited Aug 24, 2015 at 19:04

abatishchev

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answered Jun 16, 2014 at 6:51

Mohammad Atiour Islam

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