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.... Range cellA1 = worksheet . Range [ "A1" ]; Microsoft...Interop . Excel . Range cellA2 = worksheet . Range [ "A2" ]; Microsoft...