Upgrading to Prism v9.0

Upgrading to Prism v9.0

v8.1.97 to v9.0.271-pre

WARNING: Work in progress

• Namespace: Prism.Regions -> Prism.Navigation.Regions

Dialogs

1. Closing a dialog RequestClose

   • OLD: public event Action<IDialogResult>? RequestClose;
   • NEW: public DialogCloseListener RequestClose { get; }

2. Showing a dialog no longer requires calling out the parent window.

// NEW:
        _dialogService.ShowDialog(
            nameof(MessageBoxView),
            new DialogParameters($"title={title}&message={message}"));

// OLD:
_dialogService.ShowDialog(
    ParentWindow,
    nameof(MessageBoxView),
    new DialogParameters($"title={title}&message={message}"));