Encrypt XLS Files via C++
Password-protect Excel spreadsheets including XLS format using .NET Library.
Aspose.Cells for C++
Overview
How to Secure XLS File Using C++
In order to protect XLS file, we’ll use
API which is a feature-rich, powerful and easy to use document encryption API for C++ platform. You can download its latest version directly, just open
package manager, search for Aspose.Cells.Cpp and install. You may also use the following command from the Package Manager Console.
Aspose.Cells
PM> Install-Package Aspose.Cells.Cpp
Steps to Protect XLS Files via C++
Document protection using Aspose.Cells APIs can be done with just few lines of code.
- Load XLS file using Workbook class
- Use Protect(..) method with ProtectionType and Password
- Save the protected XLS file by Save() method
System Requirements
Aspose.Cells for C++ supports on all major platforms and Operating Systems. Please make sure that you have the following prerequisites.
- Microsoft Windows or a compatible OS with C++ Runtime Environment for Windows 32 bit, Windows 64 bit and Linux 64 bit.
- Add reference to the Aspose.Cells for C++ DLL in your project.
Command
Aspose::Cells::Startup();
// load the ODS Excel file
Workbook book(u"unlocked.xls");
// access the first worksheet
Worksheet worksheet = book.GetWorksheets().Get(0);
// protect the worksheet with password
worksheet.Protect(ProtectionType::All, u"password", nullptr);
// protect the whole workbook with password
book.Protect(ProtectionType::All, u"password");
// save the modified file in default format
book.Save(u"protected.xls");
Aspose::Cells::Cleanup();
About Aspose.Cells for C++ API
Aspose.Cells API can be used to create, edit, convert and render Microsoft Excel formats to different formats. Moreover, it can be used for comprehensive charting, scalable reporting and reliable calculations within software applications. Aspose.Cells is a standalone API and it does not require any software like Microsoft or OpenOffice.Free App to Protect XLS
XLS What is XLS File Format?
Files with XLS extension represent Excel Binary File Format. Such files can be created by Microsoft Excel as well as other similar spreadsheet programs such as OpenOffice Calc or Apple Numbers. File saved by Excel is known as Workbook where each workbook can have one or more worksheets. Data is stored and displayed to users in table format in worksheet and can span numeric values, text data, formulas, external data connections, images, and charts. Applications like Microsoft Excel lets you export workbook data to several different formats including PDF, CSV, XLSX, TXT, HTML, XPS, and several others. The XLS file format was replaced with a more open and structured format, XLSX, with the release of Microsoft Excel 2007. The latest versions still provide support for creating and reading XLS files, though XLSX is the first choice of use now.
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