Visual Basic
C#
Managed Extensions for C++
C++/CLI
Property Value
The bitmap.Attempting to access this property for an item whose image is currently being generated due to the item having been added to or inserted into the ThumbnailItemCollection will invoke an System.InvalidOperationException. In this situation, use the ThumbnailXpressEvents.ItemCompleteEventHandler event to determine when an item's image has completed being generated before attempting to access its image data