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 ; // 验证幻灯片 ID 列表是否存在。 if ( presentation . SlideIdList...SlideIdList != null ) { // 从幻灯片 ID 列表中获取幻灯片 ID 集合。 DocumentFormat . OpenXml...