Protect and Unprotect Worksheet

To prevent other users from accidentally or deliberately changing, moving, or deleting data in a worksheet, you can lock the cells on your Excel worksheet and then protect the sheet with a password.

Protect and Unprotect Worksheet in Microsoft Excel

1. Click Review > Protect Worksheet.
2. Enter a password in the Password box.
3. Select the allow options.
4. Select OK, re‑enter the password to confirm it, and then select OK again.

Protect Worksheet Using Aspose.Cells for .NET

You only need the following simple lines of code to protect the workbook’s structure of Excel files.

Unprotect Worksheet Using Aspose.Cells for .NET

Unprotecting a worksheet is easy with the Aspose.Cells API. If a worksheet is password‑protected, the correct password is required.

Advanced topics

• Advanced Protection Settings since Excel XP
• Detect if Worksheet is Password Protected
• Protecting Worksheets
• Unprotect a Worksheet
• Verify Password Used to Protect the Worksheet