| Name | Value | Description | |||
| exNoThumbnail | 0 | No thumbnail is displayed. The Thumbnail property is empty. | |||
| exThumbnailBitmap | 1 | The thumbnail type is a bitmap. | |||
| exThumbnailIcon | 3 | The thumbnail type is an icon. | |||
| exThumbnailPicture | 9 | The thumbnail type is a bitmap, but the original file is a picture being loaded directly. | |||
| exThumbnailAvail | 255 | Specifies whether the control looks for available views such as Picture, Bitmap, and Icon representation. For instance, if the InputFile property points to a picture file, the control loads directly the file, and the ThumbnailType property retrieves the exThumbnailPicture. If the InputFile is not a picture file, but found a bitmap representation, that the ThumbnailType property retrieves the exThumbnailBitmap, and last it gets the exThumbnailIcon. |