iTextSharp is producing a corrupt PDF with Response

问题

i tryed both, but still not working

iTextSharp + FileStream = Corrupt PDF file

iTextSharp is producing a corrupt PDF

using (System.IO.MemoryStream memoryStream = new System.IO.MemoryStream())
        {
            //abre o documento para poder editar
            document.Open();

            //Adiciona os campos de assinatura
            document.Add(Assinatura());

            //fecha o documento ao finalizar a edição
            document.Close();

            //Prepara o download
            byte[] bytes = memoryStream.ToArray();
            memoryStream.Close();
            Response.Clear();
            Response.ContentType = "image/pdf";
            //Response.ContentType = "application/pdf";
            Response.AddHeader("Content-Disposition", "attachment;
            filename=ControleDePonto.pdf");
            Response.Buffer = true;
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            Response.BinaryWrite(bytes);
            Response.End();
            Response.Close();
        }

What im doing wrong?

回答1:

Use PdfWriter to write the PDF to the MemoryStream.

PdfWriter writer = PdfWriter.GetInstance(document, memoryStream);
document.Open();

//Adiciona os campos de assinatura
document.Add(Assinatura());

//fecha o documento ao finalizar a edição
document.Close();

//Prepara o download
byte[] bytes = memoryStream.ToArray();
memoryStream.Close();
Response.Clear();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", "attachment;filename=ControleDePonto.pdf");
Response.Buffer = true;
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.BinaryWrite(bytes);
Response.End();

来源：https://stackoverflow.com/questions/24127071/itextsharp-is-producing-a-corrupt-pdf-with-response