Unprotect a Worksheet

If a developer needs to remove protection from a protected worksheet at runtime so that some changes can be made to the file? This can easily be done with Aspose.Cells.

Unprotect a Worksheet

Using Microsoft Excel

To remove protection from a worksheet:

From the Tools menu, select Protection followed by Unprotect Sheet. Protection will be removed unless the worksheet is password protected. In this case, a dialog prompts for the password. Enter the password and worksheet will be unprotected then.

Unprotecting a Simply Protected Worksheet Using Aspose.Cells

A worksheet can be unprotected by calling the Worksheet class' Unprotect method. A simply protected worksheet is one which is not protected with a password. Such worksheets can be unprotected by calling the Unprotect method without passing a parameter.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

// Instantiating a Workbook object
Workbook workbook = new Workbook(dataDir + "book1.xls");

// Accessing the first worksheet in the Excel file
Worksheet worksheet = workbook.Worksheets[0];
            
// Unprotecting the worksheet without a password
worksheet.Unprotect();

// Saving the Workbook
workbook.Save(dataDir + "output.xls", SaveFormat.Excel97To2003);

Unprotecting a Password Protected Worksheet Using Aspose.Cells

A password protected worksheet is one that is protected with a password. Such worksheets can be unprotected by calling an overloaded version of the Unprotect method that takes the password as a parameter.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

// Instantiating a Workbook object
Workbook workbook = new Workbook(dataDir + "book1.xls");

// Accessing the first worksheet in the Excel file
Worksheet worksheet = workbook.Worksheets[0];

// Unprotecting the worksheet with a password
worksheet.Unprotect("");

// Save Workbook
workbook.Save(dataDir + "output.out.xls");