private async void FinishRentalButton_OnClick(object sender, RoutedEventArgs e) { var clientParam = GetClientParam(); var product = GetProductOfParam(); if (product == null || string.IsNullOrEmpty(clientParam)) { return; } if (product.State.Equals(StateProductEnum.Available)) { this.ShowInformationMessage(_resourceManager, "RENTAL_RETURNED"); return; } var isFinishRental = _rentalService.FinishRentalProduct(clientParam, product.Id, out var differencePrice); if (isFinishRental) { if (differencePrice > 0) { var message = _resourceManager.GetResourceValue("FINISH_RENTAL_DUE_PAYMENT") ?.Replace("$", product.Id) .Replace("PRICE", Convert.ToString(differencePrice, CultureInfo.InvariantCulture)); this.ShowCustomInformationMessage(_resourceManager, message); } else { var message = _resourceManager.GetResourceValue("FINISH_RENTAL_SUCCESSFUL") ?.Replace("$", product.Id); this.ShowCustomInformationMessage(_resourceManager, message); } await LoadDataGrid(); } else { this.ShowGenericErrorDataMessage(_resourceManager); WindowHelper.HandleLogError(string.Empty); } }