Gets or sets the coordinated universal time value for the last write time for the zip item.
A DateTime value that is the coordinated universal time (UTC) value for the last write time.
The LastWriteTimeUtc property value is set to the last write time of the source file if the ZipFileItem is created from the file or directory. For the ZipTextItem, the ZipStreamItemand the ZipByteArrayItem, the LastWriteTimeUtc is set by default to the time when the item was created.
The LastWriteTimeUtc value is stored in an archive file when it is saved using the ZipArchive.Save method.