/// <summary> /// Gets the product receipt for the given productId. /// /// </summary> /// <param name="productIds"/> /// <returns/> public static async void GetProductReceipts(List <string> productIds, Action <List <ProductReceipt>, Exception> onComplete) { try { await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, async() => { try { var task = CurrentApp.GetAppReceiptAsync().AsTask(); await task; if (onComplete != null) { var receiptXml = task.Result; var receipts = ProductReceipt.CreateReceipts(receiptXml); onComplete(receipts, null); } } catch (Exception ex) { if (onComplete != null) { onComplete(null, ex); } } }); } catch (Exception ex) { if (onComplete != null) { onComplete(null, ex); } } }