How to protect Excel file with password in C++.NET

 | Tutorial 27
 | This tutorial shows how to create an Excel file in C++.NET and
 | encrypt the Excel file by setting the password required for opening the file.

#include "stdafx.h"

using namespace System;
using namespace EasyXLS;

int main()
    Console::WriteLine("Tutorial 27\n----------\n");

    // Create an instance of the class that exports Excel files, having two sheets
    ExcelDocument ^workbook = gcnew ExcelDocument(2);

    // Set the sheet names
    workbook->easy_getSheetAt(0)->setSheetName("First tab");
    workbook->easy_getSheetAt(1)->setSheetName("Second tab");

    // Set the password for protecting the Excel file when the file is open

    // Export Excel file
    Console::WriteLine("Writing file C:\\Samples\\Tutorial27 - protect Excel with password and encryption.xlsx.");
    workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial27 - protect Excel with password and encryption.xlsx");

    // Confirm export of Excel file
    String ^sError = workbook->easy_getError();
    if (sError->Equals(""))
        Console::Write("\nFile successfully created. Press Enter to Exit...");
        Console::Write(String::Concat("\nError encountered: ", sError, "\nPress Enter to Exit..."));

    // Dispose memory
    delete workbook;


    return 0;

C++ without .NET Framework
This tutorial is valid for C++ applications that can use .NET Framework. For applications that does not have .NET Framework integrated, a similar code sample is available.

EasyXLS Excel libraries:

Excel Library for C++.NET
full .NET version to import, export or convert Excel files
Excel Writer for C++.NET
.NET version to create and export Excel files
Download EasyXLS™ Excel Library for C++.NET

File formats:

MS Excel 97 - 2003
MS Excel 2007 - 2019
MS Excel 2021
Office 365