/// <summary>
/// Updates the application's homescreen badge to number of questions due today.
/// </summary>
private void UpdateApplicationBadge()
{
UIApplication.SharedApplication.ApplicationIconBadgeNumber = 0;
IList <Question> questions = Question.List();
int dueTodayCount = Question.ActiveDueToday(questions).ToList().Count;
UIApplication.SharedApplication.ApplicationIconBadgeNumber = dueTodayCount;
}