如果你已经使用itextsharp dll，不需要添加第三方dll的(插件)，我认为你正在使用htmlworker而不是它使用xmlworker，你可以很容易地将你的html转换为pdf。 一些css不能工作，他们是受支持的css 完整的解释与示例参考点击这里

        MemoryStream memStream = new MemoryStream();
        TextReader xmlString = new StringReader(outXml);
        using (Document document = new Document())
        {
            PdfWriter writer = PdfWriter.GetInstance(document, memStream);
            //document.SetPageSize(iTextSharp.text.PageSize.A4);
            document.Open();
            byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(outXml);
            MemoryStream ms = new MemoryStream(byteArray);
            XMLWorkerHelper.GetInstance().ParseXHtml(writer, document, ms, System.Text.Encoding.UTF8);
            document.Close();
        }

        Response.ContentType = "application/pdf";
        Response.AddHeader("content-disposition", "attachment;filename=" + filename + ".pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.BinaryWrite(memStream.ToArray());
        Response.End();
        Response.Flush();

如果你已经使用itextsharp dll，不需要添加第三方dll的(插件)，我认为你正在使用htmlworker而不是它使用xmlworker，你可以很容易地将你的html转换为pdf。 一些css不能工作，他们是受支持的css 完整的解释与示例参考点击这里

        MemoryStream memStream = new MemoryStream();
        TextReader xmlString = new StringReader(outXml);
        using (Document document = new Document())
        {
            PdfWriter writer = PdfWriter.GetInstance(document, memStream);
            //document.SetPageSize(iTextSharp.text.PageSize.A4);
            document.Open();
            byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(outXml);
            MemoryStream ms = new MemoryStream(byteArray);
            XMLWorkerHelper.GetInstance().ParseXHtml(writer, document, ms, System.Text.Encoding.UTF8);
            document.Close();
        }

        Response.ContentType = "application/pdf";
        Response.AddHeader("content-disposition", "attachment;filename=" + filename + ".pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.BinaryWrite(memStream.ToArray());
        Response.End();
        Response.Flush();

如果你想让用户在浏览器中下载渲染页面的pdf，那么最简单的解决方案是

window.print(); 

在客户端，它将提示用户保存当前页面的PDF。您还可以通过链接样式自定义pdf的外观

<link rel="stylesheet" type="text/css" href="print.css" media="print">

css在打印时应用于HTML。

限制

不能将文件存储在服务器端。 用户提示打印页面时，必须手动保存页面。 页必须在选项卡中呈现。

作为HiQPdf软件的代表，我认为最好的解决方案是HiQPdf HTML到PDF转换器。net。它包含了市场上最先进的HTML5, CSS3, SVG和JavaScript渲染引擎。还有一个免费版本的HTML到PDF库，您可以使用它来免费生成最多3个PDF页面。从HTML页面生成以字节[]为单位的PDF的最小c#代码是:

HtmlToPdf htmlToPdfConverter = new HtmlToPdf();

// set PDF page size, orientation and margins
htmlToPdfConverter.Document.PageSize = PdfPageSize.A4;
htmlToPdfConverter.Document.PageOrientation = PdfPageOrientation.Portrait;
htmlToPdfConverter.Document.Margins = new PdfMargins(0);

// convert HTML to PDF 
byte[] pdfBuffer = htmlToPdfConverter.ConvertUrlToMemory(url);

你可以找到更详细的例子。NET和MVC在HiQPdf HTML到PDF转换器的例子库。

OpenHtmlToPdf是一个免费的库，使用起来非常简单

string timeStampForPdfName = DateTime.Now.ToString("yyMMddHHmmssff");

string serverPath = System.Web.Hosting.HostingEnvironment.MapPath("~/FolderName");
string pdfSavePath = Path.Combine(@serverPath, "FileName" + timeStampForPdfName + ".FileExtension");


//OpenHtmlToPdf Library used for Performing PDF Conversion
var pdf = Pdf.From(HTML_String).Content();

//FOr writing to file from a ByteArray
 File.WriteAllBytes(pdfSavePath, pdf.ToArray()); // Requires System.Linq

最后更新:2020年10月

这是我整理的。net中HTML到PDF转换的选项列表(有些是免费的，有些是付费的)

GemBox.Document https://www.nuget.org/packages/GemBox.Document/ Free (up to 20 paragraphs) $680 - https://www.gemboxsoftware.com/document/pricelist https://www.gemboxsoftware.com/document/examples/c-sharp-convert-html-to-pdf/307 PDF Metamorphosis .Net https://www.nuget.org/packages/sautinsoft.pdfmetamorphosis/ $539 - $1078 - https://www.sautinsoft.com/products/pdf-metamorphosis/order.php https://www.sautinsoft.com/products/pdf-metamorphosis/convert-html-to-pdf-dotnet-csharp.php HtmlRenderer.PdfSharp https://www.nuget.org/packages/HtmlRenderer.PdfSharp/1.5.1-beta1 BSD-UNSPECIFIED License PuppeteerSharp https://www.puppeteersharp.com/examples/index.html MIT License https://github.com/kblok/puppeteer-sharp EO.Pdf https://www.nuget.org/packages/EO.Pdf/ $799 - https://www.essentialobjects.com/Purchase.aspx?f=3 WnvHtmlToPdf_x64 https://www.nuget.org/packages/WnvHtmlToPdf_x64/ $750 - $1600 - http://www.winnovative-software.com/Buy.aspx demo - http://www.winnovative-software.com/demo/default.aspx IronPdf https://www.nuget.org/packages/IronPdf/ $399 - $1599 - https://ironpdf.com/licensing/ https://ironpdf.com/examples/using-html-to-create-a-pdf/ Spire.PDF https://www.nuget.org/packages/Spire.PDF/ Free (up to 10 pages) $599 - $1799 - https://www.e-iceblue.com/Buy/Spire.PDF.html https://www.e-iceblue.com/Tutorials/Spire.PDF/Spire.PDF-Program-Guide/Convert-HTML-to-PDF-Customize-HTML-to-PDF-Conversion-by-Yourself.html Aspose.Html https://www.nuget.org/packages/Aspose.Html/ $599 - $1797 - https://purchase.aspose.com/pricing/html/net https://docs.aspose.com/html/net/html-to-pdf-conversion/ EvoPDF https://www.nuget.org/packages/EvoPDF/ $450 - $1200 - http://www.evopdf.com/buy.aspx ExpertPdfHtmlToPdf https://www.nuget.org/packages/ExpertPdfHtmlToPdf/ $550 - $1200 - https://www.html-to-pdf.net/Pricing.aspx Zetpdf https://zetpdf.com $299 - $599 - https://zetpdf.com/pricing/ Is not a well know or supported library - ZetPDF - Does anyone know the background of this Product? PDFtron https://www.pdftron.com/documentation/samples/cs/HTML2PDFTes $4000/year - https://www.pdftron.com/licensing/ WkHtmlToXSharp https://github.com/pruiz/WkHtmlToXSharp Free Concurrent conversion is implemented as processing queue. SelectPDF https://www.nuget.org/packages/Select.HtmlToPdf/ Free (up to 5 pages) $499 - $799 - https://selectpdf.com/pricing/ https://selectpdf.com/pdf-library-for-net/

如果上面的选项都帮不了你，你可以搜索NuGet包: https://www.nuget.org/packages?q=html+pdf