1. IronXL
2. How-Tos
3. Set Password to Workbook

How to Set a Password to Workbook

by Chaknith Bin

Ensuring that information or data is shared with the correct individual is crucial for maintaining proper authority. With IronXL, you can create password-protected spreadsheets and secure each individual worksheet.

How to Set a Password to Workbook

1. Download the C# library for password-protecting workbooks
2. Access the password-protected workbook
3. Apply password protection to the workbook
4. Remove password protection from the workbook
5. Export the encrypted workbook

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Access a Password-Protected Workbook

A protected spreadsheet can be opened by providing the password as the second parameter to the Load method. For example: WorkBook.Load("sample.xlsx", "IronSoftware").

Apply a Password to Workbook

To password-protect a spreadsheet, use the Encrypt method.

:path=/static-assets/excel/content-code-examples/how-to/set-password-workbook-protect.cs

WorkBook workBook = WorkBook.Load("sample.xlsx");

// Open protected spreadsheet file
WorkBook protectedWorkBook = WorkBook.Load("sample.xlsx", "IronSoftware");

// Set protection for spreadsheet file
workBook.Encrypt("IronSoftware");

workBook.Save();

Dim workBook As WorkBook = WorkBook.Load("sample.xlsx")

' Open protected spreadsheet file
Dim protectedWorkBook As WorkBook = WorkBook.Load("sample.xlsx", "IronSoftware")

' Set protection for spreadsheet file
workBook.Encrypt("IronSoftware")

workBook.Save()

Open a Password-Protected Workbook

Remove Password from Workbook

To remove the password from a spreadsheet, simply set the Password field to null, as demonstrated in the code below:

:path=/static-assets/excel/content-code-examples/how-to/set-password-workbook-unprotect.cs

// Remove protection for opened workbook. Original password is required.
workBook.Password = null;

' Remove protection for opened workbook. Original password is required.
workBook.Password = Nothing

IronXL provides the ability to protect and unprotect Excel workBooks and workSheets with a single line of C# code.

Chaknith Bin

Software Engineer

Chaknith is the Sherlock Holmes of developers. It first occurred to him he might have a future in software engineering, when he was doing code challenges for fun. His focus is on IronXL and IronBarcode, but he takes pride in helping customers with every product. Chaknith leverages his knowledge from talking directly with customers, to help further improve the products themselves. His anecdotal feedback goes beyond Jira tickets and supports product development, documentation and marketing, to improve customer’s overall experience.When he isn’t in the office, he can be found learning about machine learning, coding and hiking.