public override async void Init(object initData) { base.Init(initData); var service = new EventsService(_user.Token); var dates = new ObservableCollection <DateTime>(await service.GetEventsDates()); var eventDates = new ObservableCollection <SpecialDate>(); foreach (var dateTime in dates) { eventDates.Add(new SpecialDate(dateTime) { BackgroundColor = Color.LightCoral, Selectable = true }); } EventDates = eventDates; }