HomePageViewModel.cs

        private async Task ShowAlert()
        {
            var response = await _dialogService.DisplayAlertAsync("Yikes!", "This is a fake error to demonstrate the alert", "Retry", "Cancel");

            if (response)
            {
                // TODO: If response is true, the user wants to "retry" the action. 
                // Do something here to attempt the action again
            }
            else
            {
                // TODO: If response is false, the user has canceled the attempted action
                // So perform an action here that makes sense; we may want to naviagte to 
                // a previous page or just sit idle
            }
        }