private void ButtonTestNow_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var pushService = new PushServiceClient();
                pushService.UpdateTileCompleted += (s1, e1) =>
                {
                    try
                    {
                        pushService.CloseAsync();
                    }
                    catch (Exception ex)
                    {
                        ex.Show();
                    }
                };

                pushService.UpdateTileAsync(PushContext.Current.NotificationChannel.ChannelUri, SelectedServerImage);
            }
            catch (Exception ex)
            {
                ex.Show();
            }
        }
        private void ButtonTestNow_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var pushService = new PushServiceClient();
                pushService.UpdateTileCompleted += (s1, e1) =>
                {
                    try
                    {
                        pushService.CloseAsync();
                    }
                    catch (Exception ex)
                    {
                        ex.Show();
                    }
                };

                pushService.UpdateTileAsync(PushContext.Current.NotificationChannel.ChannelUri, SelectedServerImage);
            }
            catch (Exception ex)
            {
                ex.Show();
            }
        }