Most of the implementations that I have done for k2 blackpearl is saving the attachments from the smartforms to SharePoint. but the issue in this implementation is performance and permissions on the level of SharePoint.
what is the best way to save attachments added in K2 Smartforms. where and how to retreive them
The simplest way is creating a smartobject having a property File. Map the file attachment control to this propery in save method of the smartobject. Getlist it where you need mapping the file property to the required field. It will display as hyperlink in listview and clicking on it will prompt the user to save or open the file(depends on the browser).
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.