ansaurus

Question

Hiding inner classes - What am I missing???

Answer 1

+1 A:

If OuterClass subclasses from InnerClass then InnerClass must be at least as visible as OuterClass. If you truly desire to hide InnerClass then you'll need to switch to an "OuterClass uses InnerClass" architecture instead of an "OuterClass is a InnerClass" architecture.

Ken Browning 2010-09-02 23:01:29

Hi Ken, Thank you so much for getting back to me. I understand what you mean but I am unsure of it's implementation. Could you advise with a simple example at all please? //A

thor69uk 2010-09-02 23:06:45

public class OuterClass { private class InnerClass { public int Position { get; set;} } private InnerClass inner; public int Position { get { return inner.Position; } set { inner.Position = value; } } }

s_hewitt 2010-09-02 23:24:03

Hi, thank you so much for that. Now the concept makes perfect sense. One thing I did just notice is that when I wrote this out I missed off the all important point that InnerClass is also used by SecondaryClass as well as OuterClass. If I move InnerClass outside of OuterClass to make it accessible to SecondaryClass (even if I define it as Friend) and then add the <ComponentModel.EditorBrowsable(ComponentModel.EditorBrowsableState.Never)> _ line above it, there it is staring back at me from the debugger as soon as I set a breakpoint... What am I missing here??? Thanks again to all.

thor69uk 2010-09-02 23:49:09

Answer 2

A:

You could solve this problem with interfaces and a factory method.

Public Interface IOuterClass

End Interface


Friend MustOverride InnerClass

End Class


Friend Class OuterClass
  Implements IOuterClass
  Inherits InnerClass

End Class


Public Class OuterClassFactory

  Public Shared Function Create() as IOuterClass
    Return New OuterClass()
  End Function

End Class

Brian Gideon 2010-09-03 17:24:32

Thanks for your help! Much appreciated... //A

thor69uk 2010-09-04 20:15:23

ansaurus

tags:

views:

answers:

Hiding inner classes - What am I missing???

related questions