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我正在尝试使用 iTextSharp 创建 pdf 并将其转换为字节并使用保存对话框下载 pdf 文件。我已经使用 MemoryStream 将 pdf 转换为字节并使用 HttpResponse Page 方法下载了 pdf 文件，但它似乎不起作用。它没有任何错误，单击按钮后也没有任何反应。（使用 Chrome、FireFox）请帮助我并检查我做错了哪一部分。谢谢！ 

protected void btnPDF_Click(object sender, EventArgs e)
{
byte[] pdfBytes;
using (var ms = new MemoryStream())c
{
    var doc1 = new Document();
    PdfWriter writer = PdfWriter.GetInstance(doc1, ms);
    doc1.Open();

    PdfPTable table = new PdfPTable(1);

    table.TotalWidth = 585f;
    table.LockedWidth = true;

    iTextSharp.text.pdf.PdfPCell imgCell1 = new iTextSharp.text.pdf.PdfPCell();

    var logo = iTextSharp.text.Image.GetInstance(Server.MapPath("~/image/logo.jpg"));
    doc1.Add(logo);

    var titleFont = FontFactory.GetFont("Arial", 15, Font.BOLD);
    doc1.Add(new Paragraph("Official Report. Member Report ID : " + DDLCase.SelectedValue, titleFont));

    var normalFont = FontFactory.GetFont(FontFactory.HELVETICA, 14, Font.BOLD);
    var phrase = new Phrase();

    SqlConnection con = new SqlConnection("Data Source = localhost; Initial Catalog = project; Integrated Security = SSPI");

    SqlCommand cm = new SqlCommand("Select lro.fullname, lro.contact, mr.typeofcrime, mr.location,mr.crdatetime, mr.citizenreport, pr.policeid,  pr.prdatetime, pr.policereport, aor.officialreport,  mr.image1, mr.image2, mr.image3, mr.image4, mr.image5,  pr.image1, pr.image2, pr.image3, pr.image4, pr.image5 from MemberReport mr, PoliceReport pr, LoginRegisterOthers lro, AdminOfficialReport aor where mr.memberreportid = '" + DDLCase.SelectedValue + "' and mr.memberreportid=pr.memberreportid and pr.policereportid=aor.policereportid", con);
    con.Open();
    SqlDataReader dr;

    dr = cm.ExecuteReader();

    if (dr.Read())
    {

        phrase.Add(new Chunk("Full Name :", normalFont));
        phrase.Add(dr[0].ToString());

        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);

        phrase.Add(new Chunk("Contact :", normalFont));
        phrase.Add(dr[1].ToString());

        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);

        phrase.Add(new Chunk("Type Of Crime :", normalFont));
        phrase.Add(dr[2].ToString());

        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);

        phrase.Add(new Chunk("Location :", normalFont));
        phrase.Add(dr[3].ToString());

        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);

        phrase.Add(new Chunk("Citizen Report Date Time :", normalFont));
        phrase.Add(dr[4].ToString());

        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);

        phrase.Add(new Chunk("Citizen Report :", normalFont));
        phrase.Add(dr[5].ToString());

        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);
        phrase.Add(Chunk.NEWLINE);

        phrase.Add(new Chunk("Citizen Images :", normalFont));

        phrase.Add(new Chunk("1.", normalFont));
        Byte[] bytes1 = (Byte[])dr[10];
        iTextSharp.text.Image image1 = iTextSharp.text.Image.GetInstance(bytes1);
        image1.ScaleToFit(1150f, 1150f);
        Chunk imageChunk1 = new Chunk(image1, 0, 0);
        phrase.Add(imageChunk1);

        phrase.Add(new Chunk("2.", normalFont));
        Byte[] bytes5 = (Byte[])dr[11];
        iTextSharp.text.Image image5 = iTextSharp.text.Image.GetInstance(bytes5);
        image5.ScaleToFit(1150f, 1150f);
        Chunk imageChunk5 = new Chunk(image5, 0, 0);
        phrase.Add(imageChunk5);

        phrase.Add(new Chunk("3.", normalFont));
        Byte[] bytes6 = (Byte[])dr[12];
        iTextSharp.text.Image image6 = iTextSharp.text.Image.GetInstance(bytes6);
        image6.ScaleToFit(1150f, 1150f);
        Chunk imageChunk6 = new Chunk(image6, 0, 0);
        phrase.Add(imageChunk6);

        phrase.Add(new Chunk("4.", normalFont));
        Byte[] bytes7 = (Byte[])dr[13];
        iTextSharp.text.Image image7 = iTextSharp.text.Image.GetInstance(bytes7);
        image7.ScaleToFit(1150f, 1150f);
        Chunk imageChunk7 = new Chunk(image7, 0, 0);
        phrase.Add(imageChunk7);

        phrase.Add(new Chunk("5.", normalFont));
        Byte[] bytes8 = (Byte[])dr[14];
        iTextSharp.text.Image image8 = iTextSharp.text.Image.GetInstance(bytes8);
        image8.ScaleToFit(1150f, 1150f);
        Chunk imageChunk8 = new Chunk(image8, 0, 0);
        phrase.Add(imageChunk8);

        table.AddCell(phrase);
    }
    dr.Close();
    doc1.Add(table);
    doc1.NewPage();
    doc1.Add(table2);
    doc1.Close();

    pdfBytes = ms.ToArray();
}

Response.Clear();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", String.Format("attachment; filename={0}", "Report.pdf"));
Response.OutputStream.Write(pdfBytes, 0, pdfBytes.Length);  
}

我使用 IE 测试它得到这个错误：

JScript 匿名函数 [MicrosoftAjax.js] 第 6 行脚本

抱歉，代码中没有错误，只是此代码不适用于 AJAX 控件 UpdatePanel。感谢观看，帮助。

4

1 回答 1

0

用这个

 string fileName = string.Format(Guid.NewGuid()+".pdf");
 htmlToPdf(Server.MapPath(@"~\temp\") + fileName);
 Response.AppendHeader("Content-Disposition", "attachment; filename=" + FileName);
 Response.ContentType = "application/pdf";
 Response.TransmitFile(filePath);
 Response.End();
于 2013-07-11T05:55:04.640 回答