If an interface defines a ReadOnly Property, how can an implementer provide the Setter to this property?

Question

Is there a way for implementers of an interface where a ReadOnly property is defined to make it a complete Read/Write Property ?

Answer 1

In the end, I ended up with a solution that matches my goal :

• users that access via the Interface see at least a getter
• users that access the implementation can Read and Write.

I did this "shadowing" the implemented property like this :

'users who access through interface see only the Read accessor
Public ReadOnly Property PublicProperty_SomeInterface As String Implements SomeInterface.PublicProperty
    Get
        Return _myProperty
    End Get
End Property


'users who work with the implementation have Read/Write access
Public Property PublicProperty_SomeInterface As String
    Get
        Return _myProperty
    End Get
    Set(ByVal value As String)
        _myProperty = value
    End Set
End Property

Then, depending on how you use it, you can do :

Dim implementorAsInterface As SomeInterface = New InterfaceImplementor()
logger.Log(implementor.PublicProperty) 'read access is always ok
implementor.PublicProperty = "toto" 'compile error : readOnly access

Dim implementor As InterfaceImplementor = New InterfaceImplementor()
implementor.PublicProperty = "toto" 'write access