Read and Write External Connection of XLS and XLSB files with C++

Possible Usage Scenarios

Aspose.Cells for C++ supports reading and writing external connections for XLSX files and now extends this capability to XLSB and XLS formats. The same code structure works for all supported file types.

Read and Write External Connection of XLS/XLSB file

The following sample code loads a sample XLSB file (also works with XLS) and modifies its first external connection (typically a Microsoft Access DB connection). The code demonstrates how to:

1. Load the spreadsheet file
2. Access external connections
3. Modify connection properties
4. Save the modified file

Sample Code

This code works for both XLSB and XLS files by adjusting input/output file extensions.

#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;

int main()
{
    Aspose::Cells::Startup();

    // Source and output directories
    U16String srcDir(u"..\\Data\\01_SourceDirectory\\");
    U16String outDir(u"..\\Data\\02_OutputDirectory\\");

    // File paths
    U16String inputFilePath = srcDir + u"sampleExternalConnection_XLSB.xlsb";
    U16String outputFilePath = outDir + u"outputExternalConnection_XLSB.xlsb";

    // Load source workbook
    Workbook workbook(inputFilePath);

    // Get first external connection
    ExternalConnectionCollection connections = workbook.GetDataConnections();
    DBConnection dbCon = connections.Get(0);

    // Print connection details
    std::cout << "Connection Name: " << dbCon.GetName().ToUtf8() << std::endl;
    std::cout << "Command: " << dbCon.GetCommand().ToUtf8() << std::endl;
    std::cout << "Connection Info: " << dbCon.GetConnectionString().ToUtf8() << std::endl;

    // Modify connection name
    dbCon.SetName(u"NewCust");

    // Save modified workbook
    workbook.Save(outputFilePath);

    std::cout << "External connection updated successfully." << std::endl;

    Aspose::Cells::Cleanup();
}

C++ Equivalent:

#include <iostream>
#include <Aspose.Cells.h>

using namespace Aspose::Cells;
using namespace Aspose::Cells::ExternalConnections;

int main() {
    Aspose::Cells::Startup();
    // Load source workbook
    Workbook workbook(u"source.xlsb");
    // Access first external connection
    DBConnection conn(workbook.GetDataConnections().Get(0));

    // Output original connection details
    std::cout << "Connection Name: " << conn.GetName().ToUtf8() << std::endl;
    std::cout << "Command: " << conn.GetCommand().ToUtf8() << std::endl;
    std::cout << "Connection Info: " << conn.GetConnectionInfo().ToUtf8() << std::endl;

    // Modify connection name
    conn.SetName(u"Cust_Modified");

    // Save updated workbook
    workbook.Save(u"output.xlsb");
    Aspose::Cells::Cleanup();
    return 0;

}

Console Output

Connection Name: Cust
Command: Customer
Connection Info: Provider=Microsoft.ACE.OLEDB.12.0;Password="";User ID=Admin;Data Source=C:\TempSha\Cust.accdb;Mode=Share Deny Write;Extended Properties="";Jet OLEDB:System database="";Jet OLEDB:Registry Path="";Jet OLEDB:Database Password="";Jet OLEDB:Engine Type=6;Jet OLEDB:Database Locking Mode=0;Jet OLEDB:Global Partial Bulk Ops=2;Jet OLEDB:Global Bulk Transactions=1;Jet OLEDB:New Database Password="";Jet OLEDB:Create System Database=False;Jet OLEDB:Encrypt Database=False;Jet OLEDB:Don't Copy Locale on Compact=False;Jet OLEDB:Compact Without Replica Repair=False;Jet OLEDB:SFP=False;Jet OLEDB:Support Complex Data=False;Jet OLEDB:Bypass UserInfo Validation=False;Jet OLEDB:Limited DB Caching=False;Jet OLEDB:Bypass ChoiceField Validation=False