GemBox.Spreadsheet 2025.6.110

What is GemBox.Spreadsheet?

GemBox.Spreadsheet is a .NET component that enables you to read, write, convert, and print spreadsheet files (XLSX, XLS, XLSB, CSV, HTML, and ODS) from .NET applications.

With GemBox.Spreadsheet you get a fast and reliable component that’s easy to use and doesn't depend on Microsoft Excel. It requires only .NET and it’s much faster than Microsoft Office Automation!

GemBox.Spreadsheet Features

Get Started

You are not sure how to start working with Excel spreadsheets in .NET using GemBox.Spreadsheet? Check the code below that shows how to create an XLSX file from scratch and write 'Hello World!' in first cell

// If using Professional version, put your serial key below.
SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY");

// Create a new empty workbook.
var workbook = new ExcelFile();

// Add a worksheet to it.
var worksheet = workbook.Worksheets.Add("Sheet1");

// Write to the first cell.
worksheet.Cells["A1"].Value = "Hello World!";

// Save the workbook as Excel's XLSX file.
workbook.Save("Writing.xlsx");

For more GemBox.Spreadsheet code examples and demos, please visit our examples page.

Resources

No packages depend on GemBox.Spreadsheet.

Fixed issue with default column formatting in XLSX reader. Added support for time number formats in ODS files. Fixed issue with culture dependant number values in XLSB writer. Added support for ExcelChart.RefreshCache method. Fixed issue with relative column references in XLSB reader. Fixed issue with null result values in calculation engine. Added support for HtmlLoadOptions.StyleMediaType. Fixed issue with mission OLE stream in XLSX reader. Added support for PV, NPER, and EFFECT functions. Fixed issue with chart axis line positioning and size. Fixed issue with invalid cell reference in XLSX reader.

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2025.12.105 1 18.12.2025
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