Automapper: Conditional mapping based on Source object and ResolutionContext

Question

I need to make a conditional mapping based on both the source object and ResolutionContext. Here is my code:

AutoMapper.Mapper.CreateMap<SourceType, DestinationType>()
    .ForMember(dest => dest.Value, opt =>
        {
            opt.Condition(context=>
                {
                    bool condition1 = (bool)context.Options.Items["Condition"];
                    bool condition2 = SomeFunction(context.SourceValue);
                    return !(condition1 && !condition2);
                });
            opt.MapFrom(src => src.Value);
        });

Unfortunately, this breaks because context.SourceValue is returning a String (not a SourceType). I thought that context.SourceValue returned the source object, but this doesn't seem to be the case.

Is there any way to do conditional mapping based on both the ResolutionContext and the Source object?

Answer 1

context.SourceValue returns the member currently being converted, which in this case is SourceType.Value (which I guess is a string).

To obtain the SourceType object, use the following:

SourceType source_object = (SourceType)context.Parent.SourceValue;