Flatten a list which one of its properties is another list of object

Question

I have the following classes:

public class Owner
{
    public string Id { get; set; }
    public string Name { get; set; }
}
public class Main
{
    public s         


        

Answer 1

You can do that using linq (secret looping behind the scenes):

from m in mainList
from o in m.Owners
select new FlatList
{
   Id  = m.Id,
   Name = m.Name,
   OwnerId = o.OwnerId ,
   OwnerName = o.OwnerName 
};