LogViewer.MainWindow.OnChartClosed C# (CSharp) Method

        private void OnChartClosed(object sender, EventArgs e)
        {
            FrameworkElement chart = (FrameworkElement)sender;
            ChartStack.RemoveChart(chart);
            LayoutCharts();

            LogItemSchema item = (chart.Tag as LogItemSchema);
            if (item != null)
            {
                UnselectCategory(item);
            }

        }