Does VB.Net's lack of implicit interfaces make what I'm trying to do impossible?

Question

I know VB.Net does not allow implicit interface implementation like C#. And thus code like the following has no direct VB.Net correlation:

public interface I         


        

Answer 1

I think, as with the subs you've already shown, you need to pass all of your calls down to the same calls in the base class. The trickiest are the event handlers, but DoWork can be implemented as:

Public Shadows Custom Event DoWork As DoWorkEventHandler Implements IBackgroundWorkerAdapter.DoWork
    AddHandler(Value As DoWorkEventHandler)
        AddHandler MyBase.DoWork, Value
    End AddHandler
    RemoveHandler(Value As DoWorkEventHandler)
        RemoveHandler MyBase.DoWork, Value
    End RemoveHandler
    RaiseEvent(sender As Object, e As DoWorkEventArgs)
        MyBase.OnDoWork(e)
    End RaiseEvent
End Event

And similarly for the other event handlers. In this way, event handlers added through your DoWork event are actually added to your base classes DoWork event.