使用itextsharp在PDF中保持相似的圖像大小

Question

我正在使用itextsharp將我的圖片帶到pdf文件中。 我用chunk。 然而，當我使用chunk new line時，盡管我使用相同的scaletofit，但我的圖像會改變它的大小。

protected void btnPDF_Click(object sender, EventArgs e)
    {

        var doc1 = new Document();
        var filename = "MyTestPDF" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".pdf";
        var output = new FileStream(Path.Combine("C:\\Users\\apr13mpsip\\Downloads", filename), FileMode.Create);
        iTextSharp.text.pdf.PdfWriter.GetInstance(doc1, output);
        doc1.Open();


        PdfPTable table = new PdfPTable(1);

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


        PdfPTable table2 = new PdfPTable(1);
        table2.TotalWidth = 585f;
        table2.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();
        var phrase2 = 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())
        {


            phrase2.Add(new Chunk("Citizen Images :", normalFont));

            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);

            phrase2.Add(new Chunk("1.", normalFont));
            Byte[] bytes1 = (Byte[])dr[10];
            iTextSharp.text.Image image1 = iTextSharp.text.Image.GetInstance(bytes1);
            image1.ScaleToFit(750f, 750f);
            Chunk imageChunk1 = new Chunk(image1, 0, -30);
            phrase2.Add(imageChunk1);

            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);


            phrase2.Add(new Chunk("2.", normalFont));
            Byte[] bytes5 = (Byte[])dr[11];
            iTextSharp.text.Image image5 = iTextSharp.text.Image.GetInstance(bytes5);
            image5.ScaleToFit(750f, 750f);
            Chunk imageChunk5 = new Chunk(image5, 0, -30);
            phrase2.Add(imageChunk5);

            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);

            phrase2.Add(new Chunk("3.", normalFont));
            Byte[] bytes6 = (Byte[])dr[12];
            iTextSharp.text.Image image6 = iTextSharp.text.Image.GetInstance(bytes6);
            image6.ScaleToFit(750f, 750f);
            Chunk imageChunk6 = new Chunk(image6, 0, -30);
            phrase2.Add(imageChunk6);

            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);


            phrase2.Add(new Chunk("4.", normalFont));
            Byte[] bytes7 = (Byte[])dr[13];
            iTextSharp.text.Image image7 = iTextSharp.text.Image.GetInstance(bytes7);
            image7.ScaleToFit(750f, 750f);
            Chunk imageChunk7 = new Chunk(image7, 0, -30);
            phrase2.Add(imageChunk7);

            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);

            phrase2.Add(new Chunk("5.", normalFont));
            Byte[] bytes8 = (Byte[])dr[14];
            iTextSharp.text.Image image8 = iTextSharp.text.Image.GetInstance(bytes8);
            image8.ScaleToFit(750f, 750f);
            Chunk imageChunk8 = new Chunk(image8, 0, -30);
            phrase2.Add(imageChunk8);

            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);
            phrase2.Add(Chunk.NEWLINE);


            table2.AddCell(phrase2);

        }

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


}

Answer 1

我完全忘記了這個問題，但我現在回答它以供進一步參考。 iTextSharp會自動調整圖像大小（在大多數情況下這是您想要的），但您可以通過為每個圖像設置ScaleToFitHeight = false來避免這種情況。

phrase2.Add(new Chunk("1.", normalFont));
Byte[] bytes1 = (Byte[])dr[10];
iTextSharp.text.Image image1 = iTextSharp.text.Image.GetInstance(bytes1);
image1.ScaleToFit(750f, 750f);
//set scale to fit height = false
image1.ScaleToFitHeight = false;
Chunk imageChunk1 = new Chunk(image1, 0, -30);
phrase2.Add(imageChunk1);