By default the Sort property is exThumbailUnsorted, which indicates that the files are being displayed as being loaded. You can use the Sort property to programmatically sort the files within the control. Use the AcceptFiles property to disable drag-and-drop files in the thumbnail control. The AcceptFolders property specifies whether the control accepts drag-and-drop folders. The LimitInputFiles property limits the number of files the control can display. You can use the exThumbailSortReverse flag to reverse the sorting order.

You can use any of the following properties/method to add files into the control:

• InputFile property specifies the file or the web page to display its thumbnail.
• InputFiles property indicates the list of files to be thumbnailed
• AddInputFiles method adds files to be thumbnailed.