public class SerializableObjectLayerService :
    ServiceBase,
    ISerializableObjectLayerService

Public Class SerializableObjectLayerService
    Inherits ServiceBase
    Implements ISerializableObjectLayerService

(ObjectWcfService.svc.cs)
public class ObjectService: SerializableObjectLayerService {
    // Initializing a service with a proxy providing a SerializableObjectLayer instance.
    public ObjectService(): base(new ObjectServiceProxy()) { 
    }

    static ObjectService() {
        // Initializing a data access layer (DAL).
        // ...
    }
}

public class ObjectServiceProxy: SerializableObjectLayerProxyBase {
    protected override SerializableObjectLayer GetObjectLayer() {
        return new SerializableObjectLayer(new UnitOfWork(), true);
    }
}

(ObjectWcfService.svc.vb)
Public Class ObjectService
    Inherits SerializableObjectLayerService
    ' Initializing a service with a proxy providing a SerializableObjectLayer instance.
    Public Sub New()
        MyBase.New(New ObjectServiceProxy())
    End Sub

    Shared Sub New()
        ' Initializing a data access layer (DAL).
        ' ...
    End Sub
End Class

Public Class ObjectServiceProxy
    Inherits SerializableObjectLayerProxyBase
    Protected Overrides Function GetObjectLayer() As SerializableObjectLayer
        Return New SerializableObjectLayer(New UnitOfWork(), True)
    End Function
End Class