Не удается скопировать файл PDF из MemoryStream в FileStream

Question

Я делаю что-то не так? Могу ли я спросить, почему я не могу открыть оба файла pdfs?

Что касается MemoryStream, то он сохраняется в моем каталоге -> Папка для загрузки из Chrome и для FileStream сохраняется в FilePath i, указанном в моих кодах.

Цените любую помощь пожалуйста. Спасибо.

коды:

protected void BTN_Assign_Click(object sender, EventArgs e) 
    { 
     //String id = DDL_PatientID.SelectedItem.ToString(); 
     String id = TB_PatientID.Text; 
     String name = TB_PatientName.Text; 
     String bedID = DDL_BedID.SelectedItem.ToString(); 
     String classType = DDL_Class.SelectedItem.ToString(); 
     String block = TB_Block.Text; 
     String level = TB_Level.Text; 
     String staffId = DDL_StaffID.SelectedItem.ToString(); 
     DateTime dt = DateTime.Now; 
     String dtAssign = dt.ToString("dd MMM yyyy h:mm tt"); 

     int result = 0; 

     //Assigning bed (In Beds Table) 
     /*BedsBLL add = new BedsBLL(); 
     result = add.assignBed(bedID, id, name, classType, block, level, staffId, dtAssign);*/ 

     //Updating status of Bed Selected (In BedsList Table) 
     String status = "Alloted"; 
     BedsBLL update = new BedsBLL(); 
     result = update.updateBedStatusToAlloted(status, bedID, id, name, staffId, dtAssign); 

     AdmissionBLL a = new AdmissionBLL(); 
     int assignCounter = 0; 
     assignCounter = a.updateBedAssignedAdmission(id, bedID); 

     //PDF Creation with Admission Details from previous page 
     // --- START --- 

     DataTable admissionDetails = new DataTable(); 
     admissionDetails.Columns.Add("Date & Time Admitted"); 
     admissionDetails.Columns.Add("Reason"); 
     admissionDetails.Columns.Add("Family Phone"); 
     admissionDetails.Columns.Add("Family Email"); 
     admissionDetails.Columns.Add("First Time Admitted"); 

     DataRow dr; 
     dr = admissionDetails.NewRow(); 
     dr["Date & Time Admitted"] = Session["DTAdmitted"].ToString(); 
     dr["Reason"] = Session["Reason"].ToString(); 
     dr["Family Phone"] = Session["FamilyPhone"].ToString(); 
     dr["Family Email"] = Session["FamilyEmail"].ToString(); 
     dr["First Time Admitted"] = Session["FirstTimeAdmitted"].ToString(); 
     admissionDetails.Rows.Add(dr); 

     Document pdfDocument = new Document(PageSize.A4, 40f, 40f, 40f, 40f); 
     Font NormalFont = FontFactory.GetFont("Arial", 8, Font.NORMAL, BaseColor.BLACK); 
     Font BoldFontForHeader = FontFactory.GetFont("Arial", 10, Font.BOLD, BaseColor.BLACK); 

     String fileName = @"C:\Users\Dom\Downloads\WebFormApplication\WebFormApplication\WebFormApplication\Exported Documents\" + Session["PatientID"].ToString() + " Admission PDF" + ".pdf"; 

     Directory.CreateDirectory(Path.GetDirectoryName(fileName)); 

     PdfPCell cell = null; 

     using (MemoryStream ms = new MemoryStream()) 
     { 
      PdfWriter writer = PdfWriter.GetInstance(pdfDocument, ms); 

      FileStream fs = new FileStream(fileName, FileMode.Create); 

      //Admission Record 
      PdfPTable admissionTable = new PdfPTable(admissionDetails.Columns.Count); 
      admissionTable.TotalWidth = 550f; 
      admissionTable.LockedWidth = true; 
      admissionTable.HorizontalAlignment = Element.ALIGN_CENTER; 
      admissionTable.SetWidths(new float[] { 0.35f, 0.35f, 0.35f, 0.35f, 0.35f }); 
      admissionTable.SpacingBefore = 30f; 

      string[] headersName = { "Date Time Admitted", "Reason", "Family Phone", "Family Email", "First Time Admitted" }; 

      for (int i = 0; i < headersName.Length; i++) 
      { 
       PdfPCell hCell = new PdfPCell(new Phrase(headersName[i].ToString(), BoldFontForHeader)); 
       admissionTable.AddCell(hCell); 
      } 

      foreach (DataRow row in admissionDetails.Rows) 
      { 
       foreach (object tableCell in row.ItemArray) 
       { 
        cell = new PdfPCell(new Phrase(tableCell.ToString())); 
        cell.Padding = 5; 
        admissionTable.AddCell(cell); 
       } 
      } 

      //Beds Record 
      PdfPTable bedsRecord = new PdfPTable(5); 
      bedsRecord.TotalWidth = 550f; 
      bedsRecord.LockedWidth = true; 
      bedsRecord.HorizontalAlignment = Element.ALIGN_CENTER; 
      bedsRecord.SetWidths(new float[] { 0.35f, 0.35f, 0.35f, 0.35f, 0.35f }); 
      bedsRecord.SpacingBefore = 30f; 

      string[] headersNameBed = { "Bed ID", "Class", "Block", "Level", "Staff Incharge ID" }; 

      for (int i = 0; i < headersNameBed.Length; i++) 
      { 
       PdfPCell hCell = new PdfPCell(new Phrase(headersNameBed[i].ToString(), BoldFontForHeader)); 
       bedsRecord.AddCell(hCell); 
      } 

      PdfPCell[] cells = new PdfPCell[] { 
       new PdfPCell(new Phrase(bedID.ToString())), 
       new PdfPCell(new Phrase(classType.ToString())), 
       new PdfPCell(new Phrase(block.ToString())), 
       new PdfPCell(new Phrase(level.ToString())), 
       new PdfPCell(new Phrase(staffId.ToString())) 
      }; 

      PdfPRow bRow = new PdfPRow(cells); 
      bedsRecord.Rows.Add(bRow); 

      pdfDocument.Open(); 

      //Top of Document 

      Paragraph p1 = new Paragraph("Mount Olympus Hospital", new Font(Font.FontFamily.HELVETICA, 18)); 
      Paragraph p2 = new Paragraph("24 Jalan Kapal Street 42 Singapore 554524", new Font(Font.FontFamily.HELVETICA, 12)); 
      Paragraph p3 = new Paragraph("Telephone: 6550-9514 Fax: 6550-9245", new Font(Font.FontFamily.HELVETICA, 12)); 

      p1.Alignment = Element.ALIGN_CENTER; 
      p2.Alignment = Element.ALIGN_CENTER; 
      p3.Alignment = Element.ALIGN_CENTER; 

      pdfDocument.Add(p1); 
      pdfDocument.Add(p2); 
      pdfDocument.Add(p3); 

      Paragraph p4 = new Paragraph("Patient ID: " + Session["PatientID"], new Font(Font.FontFamily.TIMES_ROMAN, 11)); 
      Paragraph p5 = new Paragraph("Patient Name: " + Session["PatientName"], new Font(Font.FontFamily.TIMES_ROMAN, 11)); 

      p4.SpacingBefore = 20f; 
      p4.Alignment = Element.ALIGN_LEFT; 
      p5.Alignment = Element.ALIGN_LEFT; 
      p5.SpacingAfter = 20f; 

      pdfDocument.Add(p4); 
      pdfDocument.Add(p5); 

      Paragraph p6 = new Paragraph("Admission Details", new Font(Font.FontFamily.HELVETICA, 16)); 
      p6.Alignment = Element.ALIGN_LEFT; 
      p6.SpacingBefore = 20f; 

      pdfDocument.Add(p6); 

      pdfDocument.Add(admissionTable); 

      Paragraph p7 = new Paragraph("Bed Details", new Font(Font.FontFamily.HELVETICA, 16)); 
      p7.Alignment = Element.ALIGN_LEFT; 
      p7.SpacingBefore = 20f; 

      pdfDocument.Add(p7); 

      pdfDocument.Add(bedsRecord); 

      byte[] bytes = ms.ToArray(); 
      ms.Position = 0; 
      ms.CopyTo(fs); 
      fs.CopyTo(ms); 

      pdfDocument.Close(); 



      ms.Close(); 
      fs.Close(); 
      Response.Clear(); 
      Response.ContentType = "application/pdf"; 
      Response.AddHeader("content-disposition", "attachment;filename=" + Session["PatientID"].ToString() + " Admission PDF" + ".pdf"); 
      Response.ContentType = "application/pdf"; 
      Response.Buffer = true; 
      Response.Cache.SetCacheability(HttpCacheability.NoCache); 
      Response.BinaryWrite(bytes); 
      Response.End(); 
      Response.Close(); 
     } 

     /*using (System.IO.FileStream fs = new System.IO.FileStream()) 
     { 

     }*/ 



     // --- END --- 

     //Showing succcesful panel. 
     if (result > 0 && assignCounter > 0) 
     { 
      Panel_ErrorMsg.Visible = true; 
      //Panel_ErrorMsg.ToolTip = "Click on the button to return to Beds List"; 
      lb_ErrorMsg.Text = "Successfully assigned bed to Patient " + name 
       + " and updated Bed " + bedID + " status to Alloted."; 
      BTN_Assign.Visible = false; 
     } 
    } 

Answer 1

Я получил это работает, чтобы сохранить в обоих местах ...

Папка загрузок по умолчанию для Chrome и указанной папки.

отредактированных коды:

   pdfDocument.Close(); 
       //ms.Position = 0; 
       //ms.CopyTo(fs); 
       //fs.CopyTo(ms); 

       byte[] bytes = ms.ToArray(); 

       using (FileStream fs = new FileStream(fileName, FileMode.Create)) 
       { 
        ms.Position = 0; 
        ms.CopyTo(fs); 
       } 

Answer 2

Попробуйте положить .close() перед .CopyTo():

 pdfDocument.Close(); 

     ms.Position = 0; 
     ms.CopyTo(fs);