Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms....sheetName = "Sheet" + sheetId ; // Append the new worksheet and associate...Name = sheetName }; sheets . Append ( sheet ); workbookPart . Workbook...