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 = @"d:\test\MyBook.xls" ; //Open the excel...file path. string myPath = @"d:\test\MyBook.xls" ; //Open the excel...