Is there a way to restrict access to a public method to only a specific class in C#?

Question

I have a class A with a public method in C#. I want to allow access to this method to only class B. Is this possible?

UPDATE:

This is what i

Answer 1

You can if you make class A a private, nested class inside class B:

class B
{
    class A
    {
        public Int32 Foo { get; set; }
    }
}

Only B will be able to see A and it's members in this example.

Alternatively you could nest B inside A:

class A
{
    Int32 Foo { get; set; }

    public class B { }
}

In this case everyone can see both A and B but only B can see A.Foo.