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....NullPointerException” auf Workbook.save nach dem Setzen der externen...hinzu/entfernt sie. Fügt die Methode Workbook.ImportXml(Stream stream, string...