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....first worksheet Worksheet worksheet = workbook . Worksheets [ 0...object PivotTable pivotTable = worksheet . PivotTables [ 0 ]; //Remove...