创建的pdf错误消息（...文件已损坏且无法修复）

Question

我创建了一个pdf文件并通过电子邮件发送。电子邮件发送正常，但要打开PDF，我不断收到以下错误：“打开此文档时出错。文件已损坏，无法修复”。这是代码。我不确定我做错了什么......

       Document myDoc = new Document(PageSize.LETTER, 20f, 20f, 18f, 20f);

        using (MemoryStream ms = new MemoryStream())
        {
            PdfWriter pWriter = PdfWriter.GetInstance(myDoc, ms);

            myDoc.Open();

            PdfPTable table = new PdfPTable(2);
            table.WidthPercentage = 100;
            table.SpacingAfter = 10;

            float[] widths = new float[] { 1f, 2f };
            table.SetWidths(widths);
            table.HorizontalAlignment = 0;
            table.SpacingBefore = 20f;
            table.SpacingAfter = 30f;

            Font regularFont = new Font(iTextSharp.text.Font.FontFamily.HELVETICA, 12);
            Font boldFont = new Font(iTextSharp.text.Font.FontFamily.HELVETICA, 14, 1);
            Font headerFont = new Font(iTextSharp.text.Font.FontFamily.HELVETICA, 18, 1);

            PdfPCell cell = new PdfPCell();
            cell.BorderWidth = 1;

            cell = new PdfPCell(new Phrase("HEADER", headerFont));
            cell.Colspan = 2;
            cell.HorizontalAlignment = 1; 
            table.AddCell(cell);

            cell.Colspan = 1;
            cell.HorizontalAlignment = 0; 

            cell.Phrase = new Phrase("CONTENT:", boldFont);
            table.AddCell(cell);
            cell.Phrase = new Phrase("content", regularFont);
            table.AddCell(cell);
            myDoc.Add(table);

            MailMessage msg = new MailMessage();

            msg.From = new MailAddress("store@email.com", "CONTENT Report");
            msg.To.Add(new MailAddress("user@email.com"));

            msg.Subject += "Content Report";
            msg.Body += "Message.<br> :)";
            msg.IsBodyHtml = true;

            ms.Position = 0;
            msg.Attachments.Add(new Attachment(ms, "test.pdf", "application/x-pdf"));
            SmtpClient client = new SmtpClient("10.1.1.15");
            client.Send(msg);

Answer 1

你忘记了重要的事情：

 myDoc.Close();

在您对myDoc进行最后一次更改后立即将其粘贴。