Question

I have a class Base. A and B extend Base. There is also a class Relationship which contains two Base objects (source, target). Is it possible to determine whether source/target is an A or B instance?

Thanks.

Christian

PS:

Here is a little add on. I am using automapper and I would like to map the type of source/target to a string called ‘Type’ – GetType did not work (actually it works -s ee my comments – is and as are good solutions too):

Mapper.CreateMap<Item, ItemViewModel>()
                .ForMember(dest => dest.Name, opt => opt.MapFrom(src => src.ItemName == null ? "" : src.ItemName.Name))
                .ForMember(dest => dest.Type, opt => opt.MapFrom(src => src.GetType().ToString()));

How can I use is/as in this scenario?

Answer 1

Yup:

if (source is A)

if (source is B)

etc

or:

A sourceA = source as A;
if (sourceA != null)
{
   ...
}

etc

See this question for more guidance – and there are plenty of other similar ones, too.