4.5.3.2: Epplus

Install-Package EPPlus -Version 4.5.3.2 Or using .NET CLI:

// Header style using (var range = ws.Cells["A1:C1"])

using (var package = new ExcelPackage()) epplus 4.5.3.2

var worksheet = package.Workbook.Worksheets.Add("Sheet1");

: Always check your project’s license compatibility before deploying EPPlus 4.5.3.2 in production. Last updated: 2025 Install-Package EPPlus -Version 4

var worksheet = package.Workbook.Worksheets[0]; // First sheet var value = worksheet.Cells["A1"].Value?.ToString(); var number = worksheet.Cells["B1"].GetValue<double>(); Console.WriteLine($"A1: value, B1: number"); using OfficeOpenXml.Style; var ws = package.Workbook.Worksheets.Add("Styled");

using (var package = new ExcelPackage(new FileInfo(@"C:\temp\sample.xlsx"))) This makes it a lasting choice for open-source

Introduction For years, EPPlus has been the go-to library for .NET developers to create, read, and modify Excel files without needing Microsoft Office installed. Version 4.5.3.2 represents a critical milestone: it is the final fully open-source (LGPL) release before EPPlus switched to a dual licensing model. This makes it a lasting choice for open-source projects and internal tools where commercial licensing is not feasible.