Copying InfoPath attachments from one section to another

http://walisystems.com/articles/SPS/infoattach/CopyingFileAttachments.htm Get code to copy attachments programmatically from one section in the form to another. Article gives a practical scenario and a solution to resolve the problem. Properties of file attachment control can be set at design time only. How can you restrict users from deleting the file after he has uploaded it and the form has been submitted? Read the article to learn how!