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....日本語 Protect and unProtect Worksheets Contents [ Hide ] VSTO //Instantiate...= "Protect and unProtect Worksheets.xlsx" ; //Open the excel...