v3.0.7 [J16]
Copyright (C) 2012-2025, File Scribe
Number Duck is a programming library for developers to read and write Microsoft Excel compatible spreadsheets from a variety of languages.
See NumberDuck.html for API details, or check the example folders.
Since Number Duck is delivered as source, you can just drop NumberDuck.cs into your project.
Here is a simple example of writing to a spreadsheet, and then reading it back in.
using NumberDuck;
class Application
{
static int Main(string[] args)
{
System.Console.Write("Simple Example\n");
Workbook pWorkbook = new Workbook(Workbook.License.AGPL);
Worksheet pWorksheet = pWorkbook.GetWorksheetByIndex(0);
Cell pCell = pWorksheet.GetCellByAddress("A1");
pCell.SetString("Totally cool spreadsheet!");
pWorksheet.GetCell(1,1).SetFloat(3.1417f);
pWorkbook.Save("SimpleExample.xls", Workbook.FileType.XLS);
Workbook pWorkbookIn = new Workbook(Workbook.License.AGPL);
if (pWorkbookIn.Load("SimpleExample.xls"))
{
Worksheet pWorksheetIn = pWorkbookIn.GetWorksheetByIndex(0);
Cell pCellIn = pWorksheetIn.GetCell(0,0);
System.Console.Write("Cell Contents: " + pCellIn.GetString() + "\n");
}
return 0;
}
}More how to code in the example folders above, or at https://numberduck.com/docs
Number Duck is dual licensed as Open Source (AGPLv3) and commercial closed source.
Closed source licenses may be purchased from https://numberduck.com