C# - Can publicly inherited methods be hidden (e.g. made private to derived class)

Question

Suppose I have BaseClass with public methods A and B, and I create DerivedClass through inheritance.

e.g.

public DerivedClass : BaseClass {}
<         


        

Answer 1

@Brian R. Bondy pointed me to an interesting article on Hiding through inheritance and the new keyword.

http://msdn.microsoft.com/en-us/library/aa691135(VS.71).aspx

So as workaround I would suggest:

class BaseClass
{
    public void A()
    {
        Console.WriteLine("BaseClass.A");
    }

    public void B()
    {
        Console.WriteLine("BaseClass.B");
    }
}

class DerivedClass : BaseClass
{
    new public void A()
    {
        throw new NotSupportedException();
    }

    new public void B()
    {
        throw new NotSupportedException();
    }

    public void C()
    {
        base.A();
        base.B();
    }
}

This way code like this will throw a NotSupportedException:

    DerivedClass d = new DerivedClass();
    d.A();