C# public only for classes of the same interface

Question

Can I make some properties public only to same interface classes and readonly to all other classes?

Answer 1

You can use explicit implementation, for example:

interface IFoo {
    int Value { get; set; }
}

public class Foo : IFoo {
    public int Value { get; private set; }

    int IFoo.Value {
        get { return Value; }
        set { Value = value; }
    }
}

When accessed via Foo only the get will be accessible; when accessed via IFoo both getter and setter will be accessible.

Any use?