private async void LoadUserOrders() { try { if (IsBusy) { return; } IsBusy = true; OrdersDetails.Clear(); var service = new OrderHistoryService(); var details = await service.GetOrderDetailsAsync(); foreach (var order in details) { OrdersDetails.Add(order); } } catch (Exception ex) { await Application.Current.MainPage.DisplayAlert("Erreur", ex.Message, "ok"); } finally { IsBusy = false; } }