Automapper get source value from a Dictionary<string, string>

Question

I am trying to map from an item in a dictionary.

class Dest
{
    Dictionary<string, string> dict { get; set; } = new Dictionary<string, string>();
}

class Src
{
    public string src { get; set }
}

mapper.CreateMap<Src, Dest>()
    .ForMember(m => m.src, opt.MapFrom(s => s.dict.SingleOrDefault(i => i.Key.Equals("id"))));

The item in the dictionary definitely exists but the value is not being mapped.

Any obvious mistakes?

Answer 1

Argh. So it turns out my Dest class also has a property called src . It seems mapper is doing my optional map and then also doing a default src to src map.