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....string myPath = "List All Worksheets in a Workbook.xls" ; //Open...Excel . Worksheet Worksheet = ThisWorkbook . Worksheets [ "Sheet1"...