Using Automapper to map a property of a collection to an array of primitives

Question

Given the following set of classes:

class Parent
{
    string Name { get; set; }
    List children { get; set; }
}
class Child
{
     short ChildId          


        

Answer 1

Use a LINQ query to grab just the ChildIds:

.ForMember(d => d.ChildIds, o => o.MapFrom(s => s.Children.Select(c => c.ChildId).ToArray()));