Add to a readonly collection in a constructor?

Question

Is there a c# language construct that will allow me to add items to a readonly collection property in a constructor? I want to do something like this:

public cl         


        

Answer 1

You can add a backing field to the "Children" property, then just populate the backing field during construction.

Like so

public class Node
        {
            private IList _Children;
            public IList Children { get { return _Children; } }
            public Node(IList children)
            {
                _Children = children;
            }
        }

Then you can do this

var node = new Node((new ObservableList()).Add(new Node()));