private void YahooStock_Click(object sender, RoutedEventArgs e)
 {
     YahooStockChart ysc = new YahooStockChart();
     ysc.ShowDialog();
 }
        private void YahooStock_Click(object sender, RoutedEventArgs e)
        {
            YahooStockChart ysc = new YahooStockChart();

            ysc.ShowDialog();
        }