Indeed, the protection of a spreadsheet file can be applied on several levels. Protecting a workbook
, in general, prevents modifying its sheets in terms of adding, removing, renaming, etc. You can also protect a worksheet
- this allows you to keep the data in the sheet unmodified. The last option - protecting the whole file with a password, however, is not supported in RadSpreadProcessing. We have logged a feature request for that functionality and you can vote for its implementation as well as track its status through the public item
in our feedback portal.