openXML spreadsheetdocument return byte array for MVC file download

Question

I\'m trying to return a openXML spreadsheetdocument as a byte[] which I can then use to allow my MVC to send that file to a user. here is my spreadsheetdocument method to re

Answer 1

I had a similar problem with a Word document. I solved this by using the byte array outsite the using, like:

byte[] returnBytes = null;
using (MemoryStream mem = new MemoryStream())
  {
    // your code
    returnBytes = mem.ToArray();
  }

return returnBytes;