private void ShowAddressBook()
{
activeContactController = contactControllerFactory.CreateExport().Value;
activeContactController.Root = root;
activeContactController.Initialize();
activeContactController.Run();
var uiNewContactCommand = new ToolBarCommand(activeContactController.NewContactCommand, "_New contact", "Creates a new contact.");
var uiDeleteCommand = new ToolBarCommand(activeContactController.DeleteContactCommand, "_Delete", "Deletes the selected contact.");
shellService.AddToolBarCommands(new[] { uiNewContactCommand, uiDeleteCommand });
}