The Workbook and Workbooks class contains the methods and properties you use to perform tasks with workbooks.
| Task | Procedure | 
|---|---|
| Create a new workbook. | |
| Open a specified workbook. | |
| Close a specified workbook and save changes. | |
| Save workbooks in Excel formats or XML format. | |
| Bring the focus to the current workbook or a different workbook. | |
| Get a collection of recently used workbook files. | |
| Open text files as workbooks. | 
For more information about Excel tasks and the Excel object model, see Excel Object Model Overview.
In some cases, the ways that you perform these tasks in application-level add-ins is different from the ways that you perform them in document-level customizations.