By using IsDeleteEnabled="True" we can delete item in the list of files which is displayed after clicking 'Browse' button.
The question is how we can append new files to this list of files. Other words, every time when we use 'Browse' button the new portion of files replaces the old portion in a list of files.
Is it possible to append to the list of files the new selected files?
I will appreciate help if it is possible to do with the RadUpload for silverlight.