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How to translate from C# to

For a project written in I want to use the PropertyChangeNotifier class from this article, at least I’d like to try if it can help.

Since the original class is written in C# I tried to translate this class to, but one function I can’T get to compile and I don’t know why, maybe you can help.

The original function in C# is:

private static void OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    PropertyChangeNotifier notifier = (PropertyChangeNotifier)d;
    if (notifier.ValueChanged != null)
        notifier.ValueChanged(notifier, EventArgs.Empty);

My (slightly altered) translation (and the automatic translation of several web sites) is:

Private Shared Sub OnPropertyChanged(d As DependencyObject, e As DependencyPropertyChangedEventArgs)
    Dim notifier As PropertyChangeNotifier

    notifier = TryCast(d, PropertyChangeNotifier)
    If (notifier Is Nothing) Then
        Exit Sub
    End If

    RaiseEvent notifier.ValueChanged(notifier, EventArgs.Empty)
End Sub

If I remove the RaiseEvent the compiler tells me, that ValueChanged is an event and can’t be called directly, I should use RaiseEvent. But when I use RaiseEvent the compiler tells me

‘notifier’ is not declared. It may be inaccessible due to its
protection level.

But as ylou can see notifier is declared a few lines up.

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