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....xlsx" ; object paramMissing = Type . Missing ; // 声明 Chart.ChartWizard...= 0 ; bool paramHasLegend = true ; object paramTitle = "按季度销售"...