iTextSharp的是生產與響應

Question

腐敗的PDF我都tryed，但仍然沒有工作

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(); 
     } 

什麼即時做錯了什麼？

Answer 1

使用PdfWriter將PDF寫入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();