Using EPPlus with a MemoryStream

Question

I am using EPPlus to generate an XLSX file in C#. As soon as I instantiate the ExcelPackage with a memory stream - I get the error:

"A disk error occurred during a write operation. (Exception from HRESULT: 0x8003001D (STG_E_WRITEFAULT))"

Code is:

MemoryStream stream = new MemoryStream();

using (ExcelPackage package = new ExcelPackage(stream))
{
    ...
}

Has anyone else seen this?

Answer 1

None of the other answers quite got me there (the Excel worksheet was always empty), but this worked for me:

using (var package = new ExcelPackage())
{
    var worksheet = package.Workbook.Worksheets.Add("Worksheet Name");

    worksheet.Cells["A1"].LoadFromCollection(data);

    var stream = new MemoryStream(package.GetAsByteArray());
}