Skip null values with custom resolver

Question

I want to use automapper to map between my public data contracts and my DB models. I have created a class which automatically goes through all the contracts are creates mapp

Answer 1

I've got the same exact issue with mapping up the conditionals to the non-generic types. Here's how I solved it.

Wire up:

foreach (PropertyInfo p in type.GetProperties().Where(x => x.GetCustomAttributes().Any()))
    map.ForMember(p.Name, x => x.ResolveUsing(typeof(SkipMapIfNullResolver)).FromMember(p.Name));

The second .FromMember is required so the value for the member is passed to the value resolver, rather than the full model.

The resolver looks like this:

public class SkipMapIfNullResolver : IValueResolver
{
    public ResolutionResult Resolve(ResolutionResult source)
    {
        if (source.Value == null)
            source.ShouldIgnore = true;

        return source;
    }
}