How can one generate and download a .xlsx file using EPPlus in .NET?

“How can one generate and download a .xlsx file using the EPPlus library in a .NET application, including the necessary steps to create an Excel package, add data to it, and provide a download link or file to the user?”

Generating and downloading a .xlsx file using the EPPlus library in a .NET application involves creating an Excel package, populating it with data, and providing a download link or file to the user. Here's a detailed guide to achieve this:

Step 1: Install EPPlus First, install the EPPlus package via NuGet:

Step 2: Create and Populate the Excel File Create an Excel package and add data to it.

Step 3: Provide a Download Link To allow users to download the generated .xlsx file, you'll need to create a controller action in an ASP.NET Core application.

Explanation: Install EPPlus: We install the EPPlus library via NuGet to manage the Excel file operations.

GenerateExcelFile Method: This method creates an Excel package, adds data to it, and saves it to a memory stream.

DownloadExcel Action: This controller action generates the Excel file, saves it to a memory stream, and returns it as a file download response to the client.

By following these steps, you can generate and download an .xlsx file using the EPPlus library in your .NET application.