internal void CopyGraph()
 {
     try
     {
         if (chartVu != null)
         {
             BufferedImage objImage   = new BufferedImage(chartVu);
             Image         GraphImage = (Image)objImage.GetBufferedImage();
             Clipboard.SetImage((Image)GraphImage);
             MessageBoxEx.Show("Polar Graph Copied on ClipBoard", "Graph");
         }
     }
     catch (Exception ex)
     {
     }
 }