I'm using Automapper in a project and I need to dynamically valorize a field of my destination object.
In my configuration I have something similar:
cfg.CreateMap<Message, MessageDto>()
// ...
.ForMember(dest => dest.Timestamp, opt => opt.MapFrom(src => src.SentTime.AddMinutes(someValue)))
//...
;
The someValue
in the configuration code is a parameter that I need to pass at runtime to the mapper and is not a field of the source object.
Is there a way to achieve this? Something like this:
Mapper.Map<MessageDto>(msg, someValue));
You can't do exactly what you want, but you can get pretty close by specifying mapping options when you call Map. Ignore the property in your config:
cfg.CreateMap<Message, MessageDto>()
.ForMember(dest => dest.Timestamp, opt => opt.Ignore());
Then pass in options when you call your map:
int someValue = 5;
var dto = Mapper.Map<Message, MessageDto>(message, opt =>
opt.AfterMap((src, dest) => dest.TimeStamp = src.SendTime.AddMinutes(someValue)));
Note that you need to use the Mapper.Map<TSrc, TDest>
overload to use this syntax.