Thank you. I made a mistake. I thought the NCompositeShape had the method to export itself to an image, 

Hi,

You can use the NImageExporter class to export a diagram or a part of it to an image file. For more information, check out the Image Exporter documentation topic.

Best Regards,
Nevron Support Team

Hi:
      How to export a NShape to a image with the set size? because it seems the Style can not export to an image.
      Could you please show me how to do this.
     Thank you !