Validate the file name specified in item.FileName if the item is not a directory. This method throws an exception if item.Filename specifies an invalid, unsupported, or non-existent file.
This method inserts the provided ThumbnailItem into the collection at the given index. The display is updated if appropriate
Validate the file name specified in item.FileName if the item is not a directory. This method throws an exception if item.Filename specifies an invalid, unsupported, or non-existent file.
Remarks
This method does not wait for an image to be generated before returning. The thumbnail image is generated in the background. This means a thumbnail's image data (for example, its bitmap) is likely not available immediately after this method returns. Use the ThumbnailXpress.ItemComplete event to determine when an item's image has completed being generated before attempting to programmatically access its image data