The RequiredFileAttributes property lets you limit the processing of files to only those files that have specific file attributes on. This property affects the list of files specified in the FilesToProcess property.
Files that do not have the required file attributes will be tagged as "excluded" when the ZipPreprocessingFile or UnzipPreprocessingFile event is triggered, and will not be processed unless you change the value of the excluded parameter to False during the event.
To specify multiple file attributes that must be on, set the RequiredFileAttributes property equal to the sum of the values for each required file attribute.
| Enum | Value | Meaning |
|---|---|---|
| xfaNone | 0 | No specific attributes must be on in order to process files. |
| xfaReadOnly | 1 | Read-only attribute required. |
| xfaHidden | 2 | Hidden attribute required. |
| xfaSystem | 4 | System attribute required. |
| xfaVolume | 8 | Volume Label attribute required. |
| xfaFolder | 16 | Folder / directory attribute required. |
| xfaArchive | 32 | Archive bit attribute required. |
| xfaTemporary | 256 | Temporary attribute required. |
| xfaSparseFile | 512 | Sparse file attribute required. |
| xfaReparsePoint | 1024 | Reparse point attribute required. |
| xfaCompressed | 2048 | Compressed attribute required. |
| xfaOffline | 4096 | Offline attribute required. |
| xfaNotContentIndexed | 8192 | Content not indexed attribute required. |
| xfaEncrypted | 16384 | Encrypted attribute required. |
| xfaVirtual | 65536 | Virtual file attribute required. |
xfaNone
| Declaration (DLL API) | |
|---|---|
| |
Zip, Unzip, ListZipContents, PreviewFiles, RemoveFiles
The ExcludedFileAttributes property lets you limit the processing of files to only those files that don't have specific file attributes on, as opposed to only processing files that have these attributes on.
If you want to create your own, special filters in order to limit which files are processed, you can use the ZipPreprocessingFile or UnzipPreprocessingFile events to specifically exclude files (just set the excluded parameter whenever you want to exclude a file).