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...."A1" , "C1" ); //Merge the cells. rng1 . Merge ( Missing . Value..."A1" , "C1" ); //Merge the cells. rng1 . Merge (); //Save the file...