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....Presentation ()) { ISlide slide = pres . Slides [ 0 ]; // إضافة كائنات..."xlsx" ); IOleObjectFrame oof = slide . Shapes . AddOleObjectFrame...