How to deep copy a class without marking it as Serializable

Question

Given the following class:

class A
{
    public List ListB;

    // etc...
}

where B is another class that may inheri

Answer 1

Can't you do this?

[Serializable]
class A
{
     ...
    [NonSerialized]
    public List ListB;
    ....
}

And then refer to How do you do a deep copy of an object in .NET (C# specifically)? for a cloning function