public ActionResult GetBarcode([FromRoute] int id)
{
byte[] bytes;
using (var stream = new MemoryStream())
{
_pdfService.PrintBarcodeToPdf(stream, id);
bytes = stream.ToArray();
}
string guid = string.Format("{0,10:D6}", id).Trim();
var fileName = $"barcode_{guid}_{GenerateRandomDigitCode(2)}.pdf";
return(File(bytes, "application/pdf", fileName));
}