How to create pivot table in C++.NET

/*---------------------------------------------------------------
 | Tutorial 25
 |
 | This tutorial shows how to create an Excel file in C++.NET and
 | to create a pivot table in a worksheet.
 ----------------------------------------------------------------*/

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

int main()
{
    Console::WriteLine("Tutorial 25\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
    xlsFirstTable->easy_getCell(0,0)->setValue("Sale agent"); 
    xlsFirstTable->easy_getCell(0,0)->setDataType(DataType::STRING);
    xlsFirstTable->easy_getCell(0,1)->setValue("Sale country");
    xlsFirstTable->easy_getCell(0,1)->setDataType(DataType::STRING);
    xlsFirstTable->easy_getCell(0,2)->setValue("Month");
    xlsFirstTable->easy_getCell(0,2)->setDataType(DataType::STRING);
    xlsFirstTable->easy_getCell(0,3)->setValue("Year");
    xlsFirstTable->easy_getCell(0,3)->setDataType(DataType::STRING);
    xlsFirstTable->easy_getCell(0,4)->setValue("Sale amount");
    xlsFirstTable->easy_getCell(0,4)->setDataType(DataType::STRING);

    xlsFirstTable->easy_getRowAt(0)->setBold(true);

    // Add data in cells for report values - the source for pivot table
    xlsFirstTable->easy_getCell(1,0)->setValue("John Down");
    xlsFirstTable->easy_getCell(1,1)->setValue("USA");
    xlsFirstTable->easy_getCell(1,2)->setValue("June");
    xlsFirstTable->easy_getCell(1,3)->setValue("2010");
    xlsFirstTable->easy_getCell(1,4)->setValue("550");

    xlsFirstTable->easy_getCell(2,0)->setValue("Scott Valey");
    xlsFirstTable->easy_getCell(2,1)->setValue("United Kingdom");
    xlsFirstTable->easy_getCell(2,2)->setValue("June");
    xlsFirstTable->easy_getCell(2,3)->setValue("2010");
    xlsFirstTable->easy_getCell(2,4)->setValue("2300");

    xlsFirstTable->easy_getCell(3,0)->setValue("John Down");
    xlsFirstTable->easy_getCell(3,1)->setValue("USA");
    xlsFirstTable->easy_getCell(3,2)->setValue("July");
    xlsFirstTable->easy_getCell(3,3)->setValue("2010");
    xlsFirstTable->easy_getCell(3,4)->setValue("3100");

    xlsFirstTable->easy_getCell(4,0)->setValue("John Down");
    xlsFirstTable->easy_getCell(4,1)->setValue("USA");
    xlsFirstTable->easy_getCell(4,2)->setValue("June");
    xlsFirstTable->easy_getCell(4,3)->setValue("2011");
    xlsFirstTable->easy_getCell(4,4)->setValue("1050");

    xlsFirstTable->easy_getCell(5,0)->setValue("John Down");
    xlsFirstTable->easy_getCell(5,1)->setValue("USA");
    xlsFirstTable->easy_getCell(5,2)->setValue("July");
    xlsFirstTable->easy_getCell(5,3)->setValue("2011");
    xlsFirstTable->easy_getCell(5,4)->setValue("2400");

    xlsFirstTable->easy_getCell(6,0)->setValue("Steve Marlowe");
    xlsFirstTable->easy_getCell(6,1)->setValue("France");
    xlsFirstTable->easy_getCell(6,2)->setValue("June");
    xlsFirstTable->easy_getCell(6,3)->setValue("2011");
    xlsFirstTable->easy_getCell(6,4)->setValue("1200");

    xlsFirstTable->easy_getCell(7,0)->setValue("Scott Valey");
    xlsFirstTable->easy_getCell(7,1)->setValue("United Kingdom");
    xlsFirstTable->easy_getCell(7,2)->setValue("June");
    xlsFirstTable->easy_getCell(7,3)->setValue("2011");
    xlsFirstTable->easy_getCell(7,4)->setValue("700");

    xlsFirstTable->easy_getCell(8,0)->setValue("Scott Valey");
    xlsFirstTable->easy_getCell(8,1)->setValue("United Kingdom");
    xlsFirstTable->easy_getCell(8,2)->setValue("July");
    xlsFirstTable->easy_getCell(8,3)->setValue("2011");
    xlsFirstTable->easy_getCell(8,4)->setValue("360");

    // Create pivot table
    ExcelPivotTable ^xlsPivotTable = gcnew ExcelPivotTable();

    xlsPivotTable->setName("Sales");
    xlsPivotTable->setSourceRange("First tab!$A$1:$E$9",workbook);
    xlsPivotTable->setLocation("A3:G15");
    xlsPivotTable->addFieldToRowLabels("Sale agent");
    xlsPivotTable->addFieldToColumnLabels("Year");
    xlsPivotTable->addFieldToValues("Sale amount","Sale amount per year",PivotTable::SUBTOTAL_SUM);
    xlsPivotTable->addFieldToReportFilter("Sale country");
    xlsPivotTable->setOutlineForm();
    xlsPivotTable->setStyle(PivotTable::PIVOT_STYLE_DARK_11);

    // Add pivot table to the second sheet
    ExcelWorksheet ^xlsWorksheet = safe_cast<ExcelWorksheet^>(workbook->easy_getSheet("Second tab"));
    xlsWorksheet->easy_addPivotTable(xlsPivotTable);

    // Export Excel file
    Console::WriteLine("Writing file C:\\Samples\\Tutorial25 - pivot table in Excel.xlsx.");
    workbook->easy_WriteXLSXFile("C:\\Samples\\Tutorial25 - pivot table in 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;
}