In C#, How Can I Generate An Excel (.xls And .xlsx) File Without The Need To Install Microsoft Office?

You can create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office by using third-party libraries like EPPlus or NPOI. Here’s an example using EPPlus:

  1. Install EPPlus NuGet package in your C# project. Right-click on your project > Manage NuGet Packages > Search for "EPPlus" > Click Install.

  2. Import the necessary namespaces in your C# code:

using OfficeOpenXml;
using OfficeOpenXml.Style;
  1. Write the code to create an Excel file:
// Create a new Excel package
using (ExcelPackage excelPackage = new ExcelPackage())
    // Create a worksheet
    ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets.Add("Sheet1");

    // Set cell values
    worksheet.Cells["A1"].Value = "Hello";
    worksheet.Cells["B1"].Value = "World!";

    // Save the Excel package
    FileInfo fi = new FileInfo("path/to/your/file.xlsx");

In the above code, you can change the worksheet name and cell values as per your requirements. Make sure to change the file path to the desired location where you want to save the Excel file.

EPPlus provides various options to style your cells, apply formatting, add formulas, etc. You can refer to the EPPlus documentation for more advanced usage.

Note that the EPPlus library only supports .XLSX file format. If you specifically need .XLS format, you can use NPOI library or other similar libraries that support older Excel formats.

About the Author Rex

I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!