private async void btnQueryLicense_Click(object sender, RoutedEventArgs e)
        {
            var result = await StoreHelper.GetLicense();

            Logs("=====Get License Information=========");
            Logs("Active=" + result.IsActive.ToString());
            Logs("Inactive=" + result.IsInactive.ToString());
            Logs("Trial=" + result.IsTrial.ToString());
            Logs("Full=" + result.IsFull.ToString());
            Logs("Price=" + result.Price);
            if (result.AddOns.Count == 0)
            {
                Logs("=====Durable Add-On is nothing=======");
                return;
            }
            Logs("=====Get Durable Add-On Information==");
            foreach (var item in result.AddOns)
            {
                Logs("=====Key=" + item.Key);
                Logs("SkuStoreId=" + item.SkuStoreId);
                Logs("ExpirationDate=" + item.ExpirationDate.ToLongDateString());
            }
        }