[英]Displaying a pdf to webpage using iTextSharp?
I am generating a pdf using iTextSharp. 我正在使用iTextSharp生成pdf。 I would like to display it on the webpage and let the user save it from the online pdf viewer. 我想在网页上显示它,让用户从在线pdf查看器中保存它。 dynamicpdf has a drawtoweb() method, but it is not free to use and I cannot find the same functionality using iTextSharp. dynamicpdf有drawtoweb()方法,但它不是免费使用,使用iTextSharp的我找不到相同的功能。 How can I display the pdf? 我该如何显示pdf?
string newFile = "Pdf Document.pdf";
Document doc = new Document();
PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(newFile, FileMode.Create));
doc.AddCreator("Myself");
doc.AddTitle("Sample PDF Document");
doc.Open();
doc.Add(new Paragraph("Hello, World!"));
doc.Close();
Is there a reason you can't just display the PDF like any other website does? 有没有理由你不能像其他任何网站一样显示PDF? Just send the generated file to the user as a response stream with the correct meta data. 只需将生成的文件作为具有正确元数据的响应流发送给用户。 It will open automatically in its default PDF viewer, most likely inside the browser. 它将在其默认PDF查看器中自动打开,很可能在浏览器中。
As far as I understand the DrawToWeb method of dynamicpdf that's exactly what it is doing. 据我所知, Dynamicpdf的DrawToWeb方法正是它正在做的事情。
UPDATE: 更新:
Some research brought up a solution like this: 一些研究提出了这样的解决方案:
Add an iframe to your web page: 将iframe添加到您的网页:
<IFrame runat="server" id="iframepdf">
</IFrame>
and populate it with the PDF file: 并使用PDF文件填充它:
iframepdf.Attributes.Add("src", "showpdf.ashx?pdf=" + xyz);
See How <iframe src can read local temp file? 请参阅如何<iframe src可以读取本地临时文件? for more info. 了解更多信息。
I ended up just buying a license to dynamicpdf . 我最后只是购买了dynamicpdf的许可证。 It was much easier to work with than itextsharp. 使用比itextsharp更容易。
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