How to return an Excel file from ASP.NET Core Web API web-app?

Question

In similar questions, with this code works to download a PDF:

I\'m testing with local files (.xlsx, .pdf, .zip) inside the Controller folder.

Answer 1

Following is an example of how you can download a file, you can model your scenario of downloading an Excel file after it:

public IActionResult Index([FromServices] IHostingEnvironment hostingEnvironment)
{
    var path = Path.Combine(hostingEnvironment.ContentRootPath, "Controllers", "TextFile.txt");
    return File(System.IO.File.OpenRead(path), contentType: "text/plain; charset=utf-8", fileDownloadName: "Readme.txt");
}

If the file is in the wwwroot folder, you could do something like below instead:

public IActionResult Index()
{
    return File(virtualPath: "~/TextFile.txt", contentType: "text/plain; charset=utf-8", fileDownloadName: "Readme.txt");
}