void UpdateBadgeWithNumber(int number) { // Note: This sample contains an additional project, NotificationsExtensions. // NotificationsExtensions exposes an object model for creating notifications, but you can also modify the xml // of the notification directly. See the additional function UpdateBadgeWithNumberWithStringManipulation to see how to do it // by modifying strings directly. BadgeNumericNotificationContent badgeContent = new BadgeNumericNotificationContent((uint)number); // Send the notification to the application’s tile. BadgeUpdateManager.CreateBadgeUpdaterForApplication().Update(badgeContent.CreateNotification()); OutputTextBlock.Text = badgeContent.GetContent(); }