System.FileExtension
Identifies the file extension of the file-based item, including the leading period. This property is derived from System.FileName. If System.FileName either does not have a file extension or is VT_EMPTY, the value for this property should be VT_EMPTY.
To obtain the type of any item (including an item that is not a file), use System.ItemType.
propertyDescription name = System.FileExtension shellPKey = PKEY_FileExtension formatID = E4F10A3C-49E6-405D-8288-A23BD4EEAA6C propID = 100 searchInfo inInvertedIndex = true isColumn = true isColumnSparse = true columnIndexType = OnDisk maxSize = 128 mnemonics = fileextension|extension|ext|filext labelInfo label = File extension sortDescription invitationText = Specify file extension hideLabel = false typeInfo type = String groupingRange = Discrete isInnate = true canBePurged multipleValues = false isGroup = false aggregationType = Default isTreeProperty = false isViewable = false isQueryable = false includeInFullTextQuery = false conditionType = String defaultOperation = Equal aliasInfo sortByAlias = None additionalSortByAliases = None displayInfo defaultColumnWidth = 20 displayType alignment = Left relativeDescriptionType = General defaultSortDirection = Ascending stringFormat formatAs = General booleanFormat formatAs = YesNo numberFormat formatAs = General formatDurationAs = hh:mm:ss dateTimeFormat formatAs = General formatTimeAs = ShortTime formatDateAs = ShortDate enumeratedList defaultText useValueForDefault = False enum value text enumRange minValue setValue text drawControl control = Default editControl control = Default filterControl control = Default queryControl control = Default
Remarks
PKEY values are defined in Propkey.h.
If System.FileName is VT_EMPTY, this property should also be empty. Otherwise, this property should be derived appropriately by the data source from System.FileName. If System.FileName does not include a file extension, System.FileExtension should be VT_EMPTY. To obtain the type of any item (including an item that is not a file), use System.ItemType.
Path and file extension property examples.
| Path | File Extension |
|---|---|
| c:\files\personal\hello.txt | .txt |
| \\server\share\mydir\news.doc | .doc |
| \\server\share\numbers.xls | .xls |
| \\server\share\folder | VT_EMPTY |
| c:\Stuff\MyFolder | VT_EMPTY |
| [desktop] | VT_EMPTY |
Related topics
- propertyDescription
- searchInfo
- labelInfo
- typeInfo
- displayInfo
- stringFormat
- booleanFormat
- numberFormat
- dateTimeFormat
- enumeratedList
- drawControl
- editControl
- filterControl
- queryControl
Send comments about this topic to Microsoft
Build date: 2/3/2012
