Defines extension methods for objects exposing the IWorkbook interface.
To enable workbook extensions, add a reference to the DevExpress.Docs.v19.1.dll assembly and explicitly import the DevExpress.Spreadsheet namespace into the code with a using directive (Imports in Visual Basic).
Subsequently, all extension methods become accessible as methods of objects, exposing the IWorkbook interface (SpreadsheetControl.Document or non-visual Workbook) and you can call them using instance method syntax.
You require a license to the DevExpress Office File API or DevExpress Universal Subscription to use these methods in production code. Refer to the DevExpress Subscription page for pricing information.