ASP.NET MVC EPPlus Download Excel File

Question

So I\'m using the fancy EPPlus library to write an Excel file and output it to the user to download. For the following method I\'m just using some test data to minimize on t

Answer 1

Here's what I'm using - I've been using this for several months now and haven't had an issue:

public ActionResult ChargeSummaryData(ChargeSummaryRptParams rptParams)
{
    var fileDownloadName = "sample.xlsx";
    var contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";

    var package = CreatePivotTable(rptParams);

    var fileStream = new MemoryStream();
    package.SaveAs(fileStream);
    fileStream.Position = 0;

    var fsr = new FileStreamResult(fileStream, contentType);
    fsr.FileDownloadName = fileDownloadName;

    return fsr;
}

One thing I noticed right off the bat is that you don't reset your file stream position back to 0.