| GrapeCity.Excel Namespace : IExcelWorkbookPropery Interface | 
The following tables list the members exposed by IExcelWorkbookPropery.
| Name | Description | |
|---|---|---|
|  | IsDate1904 | Flag indicates whether the workbook use 1904 date system or not. | 
|  | SaveExternalLinks | Get or set a value indicating whether save external links when save the file. |