SuperMap.Web.Mapping.HeatMapLayer.OnIntensityPropertyChanged C# (CSharp) Method

        private static void OnIntensityPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if ((int)e.NewValue < 1)
            {
                //TODO:Resource
                //throw new ArgumentOutOfRangeException("Radius");
                throw new ArgumentOutOfRangeException(ExceptionStrings.RadiusLessThanOne);
            }
            HeatMapLayer layer = d as HeatMapLayer;
            if (layer.IsInitialized)
            {
                if (layer.timer == null)
                {
                    layer.timer = new DispatcherTimer() { Interval = TimeSpan.FromMilliseconds(50.0) };

                    layer.timer.Tick += (s1, e1) =>
                    {
                        layer.timer.Stop();
                        layer.OnLayerChanged();
                    };

                }
                layer.timer.Stop();
                layer.timer.Start();
            }
            layer.OnLayerChanged();
        }