private void OnStatisticItemsListSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count != 1)
{
return;
}
var item = (Label)e.AddedItems[0];
var itemId = (int)item.Tag;
var statisticDataPoints = databaseController.GetPointsForActivity(itemId);
SeriesCollection[0].Values = new ChartValues <int>(statisticDataPoints.Select(dataPoint => dataPoint.Count));
SeriesCollection[1].Values = new ChartValues <int>(statisticDataPoints.Select(dataPoint => dataPoint.In));
SeriesCollection[2].Values = new ChartValues <int>(statisticDataPoints.Select(dataPoint => dataPoint.Out));
}