ArcGISWindowsPhoneSDK.TimeFeatureLayer.FeatureLayer_Initialized C# (CSharp) Метод

        private void FeatureLayer_Initialized(object sender, EventArgs e)
        {
            years = new List<DateTime>();
            DateTime dt = (sender as FeatureLayer).TimeExtent.Start;
            while (dt < (sender as FeatureLayer).TimeExtent.End)
            {
                years.Add(dt);
                dt = dt.AddYears(1);
            }
            StartYearListBox.ItemsSource = years;
            StartYearListBox.SelectedIndex = 0;
            EndYearListBox.ItemsSource = years;
            EndYearListBox.SelectedIndex = years.Count - 1;
        }