使用 iTextSharp 将图像和文本放置在特定(绝对)位置

本文关键字：绝对 位置 iTextSharp 图像 文本 使用 | 更新日期: 2023-09-27 18:32:07

我正在使用iTextSharp生成一个PDF，页面中间有动态内容，将我的PdfPTable的底部推得太远。有时甚至从页面底部转到另一页。

是否有可能将底部的 PdfPTable 定位在它上面的表格需要更多的垂直空间时不会被推倒？

使用 iTextSharp 将图像和文本放置在特定(绝对)位置

这是我

的解决方案。

Views''Home''Index.cshtml： 

<h2>Create PDF</h2>
@Html.ActionLink("Create the PDF", "CreatePDF", "Home")
</div>

首页控制器.cs：

    public ActionResult Index()
    {
        return View();
    }
    public FileStreamResult CreatePDF()
    {
        Stream fileStream = GeneratePDF();
        HttpContext.Response.AddHeader("content-disposition", "inline; filename=MyPDF.pdf");
        var fileStreamResult = new FileStreamResult(fileStream, "application/pdf");
        return fileStreamResult;
    }
    private Stream GeneratePDF()
    {
        var rect = new Rectangle(288f, 144f);
        var document = new Document(rect, 10, 10, 10, 10);
        document.SetPageSize(PageSize.LETTER.Rotate());
        MemoryStream memoryStream = new MemoryStream();
        PdfWriter pdfWriter = PdfWriter.GetInstance(document, memoryStream);
        document.Open();

        ////////////////////////
        //Place Image in a Specific (Absolute) Location
        ////////////////////////
        Image myImage = Image.GetInstance(Server.MapPath("../Content/BI_logo_0709.png"));
        myImage.SetAbsolutePosition(45, 45);
        //[dpi of page]/[dpi of image]*100=[scale percent]
        //72 / 200 * 100 = 36%
        //myImage.ScalePercent(36f);
        myImage.ScalePercent(36f);
        document.Add(myImage);

        ////////////////////////
        //Place Text in a Specific (Absolute) Location
        ////////////////////////
        //Create a table to hold everything
        PdfPTable myTable = new PdfPTable(1);
        myTable.TotalWidth = 200f;
        myTable.LockedWidth = true;
        //Create a paragraph with the text to be placed
        BaseFont bfArialNarrow = BaseFont.CreateFont(Server.MapPath("../Content/ARIALN.ttf"), BaseFont.CP1252, BaseFont.EMBEDDED);
        var basicSmaller = new Font(bfArialNarrow, 10);
        var myString = "Hello World!" +
                            Environment.NewLine +
                            "Here is more text." +
                            Environment.NewLine +
                            "Have fun programming!";
        var myParagraph = new Paragraph(myString, basicSmaller);
        //Create a cell to hold the text aka paragraph
        PdfPCell myCell = new PdfPCell(myParagraph);
        myCell.Border = 0;
        //Add the cell to the table
        myTable.AddCell(myCell);
        //Add the table to the document in a specific (absolute) location
        myTable.WriteSelectedRows(0, -1, 550, 80, pdfWriter.DirectContent);


        pdfWriter.CloseStream = false;
        document.Close();
        memoryStream.Position = 0;
        return memoryStream;
    }
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