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.... Add ( "My Worksheet" ); //Insert a string value to a cell worksheet.... Cells [ "C2" ]. Value = "Image" ; //Set the 4th row height...