How to export data to XLSX file in C++.NET

/*-----------------------------------------------------------------
 | Tutorial 04
 |
 | This tutorial shows how to export data to XLSX file that has
 | multiple sheets in C++.NET. The first sheet is filled with data.
 ------------------------------------------------------------------*/

using namespace System;
using namespace EasyXLS;
using namespace EasyXLS::Constants;

int main()
{
    Console::WriteLine("Tutorial 04\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");

    // Get the table of data for the first worksheet
    ExcelWorksheet ^xlsFirstTab = safe_cast<ExcelWorksheet^>(workbook->easy_getSheetAt(0));
    ExcelTable ^xlsFirstTable = xlsFirstTab->easy_getExcelTable();

    // Add data in cells for report header
    for (int column=0; column<5; column++)
    {
        xlsFirstTable->easy_getCell(0,column)->setValue(String::Concat("Column ",(column + 1).ToString())); 
        xlsFirstTable->easy_getCell(0,column)->setDataType(DataType::STRING);
    }

    // Add data in cells for report values
    for (int row=0; row<100; row++)
    {
        for (int column=0; column<5; column++)
        {
            xlsFirstTable->easy_getCell(row+1,column)->setValue(
                String::Concat("Data ", (row + 1).ToString(), ", ", (column + 1).ToString()));
            xlsFirstTable->easy_getCell(row+1,column)->setDataType(DataType::STRING);
        }
    }
    
    // Set column widths
    xlsFirstTable->setColumnWidth(0, 70);
    xlsFirstTable->setColumnWidth(1, 100);
    xlsFirstTable->setColumnWidth(2, 70);
    xlsFirstTable->setColumnWidth(3, 100);
    xlsFirstTable->setColumnWidth(4, 70);

    // Export the XLSX file
    Console::WriteLine("Writing file C:\\Samples\\Tutorial04 - export data to Excel.xlsx.");
    workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial04 - export data to Excel.xlsx");

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

    // Dispose memory
    delete workbook;

    Console::ReadLine();

    return 0;
}