## OleFormat.OlePackage property Provide access to [`OlePackage`](../../olepackage/) if OLE object is an OLE Package. Returns `null` otherwise. ```csharp public OlePackage OlePackage { get; } ``` #......our external file will be a ZIP archive. byte[] zipFileBytes...ReadAllBytes(DatabaseDir + "cat001.zip"); using (MemoryStream stream...