public IActionResult Export()
{
using (var mstream = new MemoryStream())
{
using (var stream = _managementService.Download(_fees.GetDataTable()))
{
stream.Seek(0, SeekOrigin.Begin);
stream.CopyTo(mstream);
}
return(new FileContentResult(mstream.ToArray(), "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"));
}
}