| Name | Description | |
|---|---|---|
 | Add | Returns a newly created workbook. |
| Close | Closes all of the workbooks in a workbook set. |
| Contains | Returns true if the specified IWorkbook is contained by the collection of workbooks, otherwise false is returned. |
| GetEnumerator | (Inherited from System.Collections.IEnumerable) |
| Open | Overloaded. Open an existing workbook in a newly created instance of IWorkbook. |
| OpenFromMemory | Overloaded. Open an existing workbook in a newly created instance of IWorkbook. |
| OpenFromStream | Overloaded. Open an existing workbook in a newly created instance of IWorkbook. |