SuperMap.WindowsPhone.Core.GeoRegion.Parts_CollectionChanged C# (CSharp) Method

        private void Parts_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
        {
            if (e.OldItems != null)
            {
                RemoveGeoPointCollectionEvents(e.OldItems);
            }
            if (e.NewItems != null)
            {
                AddGeoPointCollectionEvents(e.NewItems);
            }
            savedBounds = new Rectangle2D();
            base.RaiseGeometryChanged();
        }