Farpoint Spread 7.0.25 |work| Online

// Add a formula spread.Sheets[0].Cells[0, 5].Formula = "SUM(A1:A10)";

Controls.Add(spread);

// Export to Excel farPointSpread1.SaveExcel("output.xlsx", FarPoint.Excel.ExcelSaveFlags.UseOOXMLFormat); FarPoint Spread 7.0.25

In the early 2000s, FarPoint Spread 7.0 was the "gold standard" for adding Excel-like power to desktop applications. Version 7.0.25 specifically was one of those reliable, late-cycle builds that developers clung to because it was stable and packed with features that seemed like magic at the time: What Happened to FarPoint Spread? | Spread.NET & SpreadJS . // Add a formula spread