# Workbook Protection

Workbook protection in RadSpreadProcessing prevents users from adding, removing, renaming, or reordering worksheets. You can protect the workbook with or without a password and remove the protection when needed.

Workbook protection affects the user interface only. When a workbook is protected, the user interface does not allow users to add, delete, reorder, or rename worksheets. As a developer, you retain full access to the workbook's sheets collection and can modify it in code.

## How to Protect a Workbook

To protect a workbook, call the `Protect(string)` method of the `Workbook` class. The method accepts a password string.

**Example 1** illustrates how to create a workbook from scratch and protect it with a password.

> important Workbook protection protects the workbook structure from editing. To require a password before users can open the document, you must encrypt it. SpreadProcessing does not support encryption yet.

**Example 1: Password-Protect a Workbook**

```C#
Workbook workbook = new Workbook();
workbook.Worksheets.Add();

workbook.Protect("telerik");
```

## How to Unprotect a Workbook

To remove workbook protection, call the `Unprotect(string)` method of the `Workbook` class. The method returns a `Boolean` value that indicates whether the workbook is successfully unprotected.

**Example 2** demonstrates how to unprotect a workbook.

**Example 2: Remove workbook protection by supplying the current password**

```C#
Workbook workbook = new Workbook();
			workbook.Worksheets.Add();

			workbook.Protect("telerik");

			workbook.Unprotect("telerik");
```

## See Also

* [What is a Workbook?](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-workbooks/working-with-workbooks-what-is-workbook)
* [Worksheet Protection](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/features/protection/worksheet)