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....العرض التقديمي باستخدام فئة Presentation . الحصول على حجم الشريحة...1 ; using var presentation = new Presentation ( "sample.pptx"...