使用PdfSharp将Tif文档转换为PDF [英] Convert Tif document to PDF with PdfSharp

问题描述

我正在使用WinForms.在我的表单中，我有一个显示tif图像文档的图片框.我将PdfSharp用作将tif文档转换为pdf文档的参考之一.好消息是，我可以转换当前在图片框中显示的tif页面之一.

I’m using WinForms. In my form I have a picturebox that displays tif image documents. I’m using PdfSharp as one of my references to convert the tif documents to pdf documents. The good news is I can convert one of the tif pages that is currently displayed in the picturebox.

问题是，当我拥有一页以上的tif文档时，无法将它们全部转换成单个Pdf文件.例如，如果我有一个包含5页的tif文档图像，我想按一个按钮并将所有5个tif页转换为5个pdf页.

The problem is when I have a tif document that has more than 1 page, I cannot convert them all into on single Pdf file. For example if I have a tif document image that contains 5 pages, I would want to press a button and convert all those 5 tif pages into 5 pdf pages.

为了测试，这里有一个5页的tif文档.

For testing here is a tif document with 5 pages.

链接: http://www.filedropper.com/sampletifdocument5pages

我的代码:

using PdfSharp;
using PdfSharp.Pdf;
using PdfSharp.Drawing;

    private string srcFile, destFile;
    bool success = false;

    private void Open_btn_Click(object sender, EventArgs e)
    {
        OpenFileDialog dlg = new OpenFileDialog();
        dlg.Title = "Open Image";

        if (dlg.ShowDialog() == DialogResult.OK)
        {
            pictureBox1.Image = Image.FromFile(dlg.FileName);

            lbl_SrcFile.Text = dlg.FileName; 
        }
        dlg.Dispose();
    }

    private void Save_btn_Click(object sender, EventArgs e)
    {
        SaveImageToPDF();
    }

    private void SaveImageToPDF()
    {
        try
        {
            string source = lbl_SrcFile.Text;
            string savedfile = @"C:\image\Temporary.tif";
            pictureBox1.Image.Save(savedfile);
            source = savedfile;
            string destinaton = @"C:\image\new_PDF_TIF_Document.pdf";

            PdfDocument doc = new PdfDocument();
            var page = new PdfPage();


            XImage img = XImage.FromFile(source);

            if (img.Width > img.Height)
            {
                page.Orientation = PageOrientation.Landscape;
            }
            else
            {
                page.Orientation = PageOrientation.Portrait;
            }

            doc.Pages.Add(page);

            XGraphics xgr = XGraphics.FromPdfPage(doc.Pages[0]); xgr.DrawImage(img, 0, 0);

            doc.Save(destinaton);
            doc.Close();
            img.Dispose(); //dispose img in order to free the tmp file for deletion (Make sure the PDF file is closed thats being used)
            success = true;
            MessageBox.Show("                     File saved successfully! \n\nLocation: C:\\image\\New PDF Document.pdf", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
            System.Diagnostics.Process.Start(destinaton);
            File.Delete(savedfile);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }

推荐答案

添加了完整的工作代码...带有硬编码的路径.

Added full working code...with paths hard-coded.

try
{
    string destinaton = @"C:\Temp\Junk\new_PDF_TIF_Document.pdf";

    Image MyImage = Image.FromFile(@"C:\Temp\Junk\Sample tif document 5 pages.tiff");

    PdfDocument doc = new PdfDocument();

    for (int PageIndex = 0; PageIndex < MyImage.GetFrameCount(FrameDimension.Page); PageIndex++)
    {
        MyImage.SelectActiveFrame(FrameDimension.Page, PageIndex);

        XImage img = XImage.FromGdiPlusImage(MyImage);

        var page = new PdfPage();

        if (img.Width > img.Height)
        {
            page.Orientation = PageOrientation.Landscape;
        }
        else
        {
            page.Orientation = PageOrientation.Portrait;
        }
        doc.Pages.Add(page);

        XGraphics xgr = XGraphics.FromPdfPage(doc.Pages[PageIndex]);

        xgr.DrawImage(img, 0, 0);
    }

    doc.Save(destinaton);
    doc.Close();
    MyImage.Dispose();

    MessageBox.Show("File saved successfully!", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
    MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

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