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

编辑:新建议 使用PdfSharp的PDF HTML渲染器

(在尝试wkhtmltopdf并建议避免它之后)

HtmlRenderer。PdfSharp是一个100%完全c#托管代码，易于使用，线程安全，最重要的是免费(新BSD许可证)的解决方案。

使用

下载HtmlRenderer。PdfSharp nuget包。 使用实例方法。 public static Byte[] PdfSharpConvert(String html) ｛ 字节[]res = null; 使用(内存流ms =新的内存流()) ｛ var pdf = TheArtOfDev.HtmlRenderer.PdfSharp.PdfGenerator。GeneratePdf (html、PdfSharp.PageSize.A4); pdf.Save(女士); res = ms.ToArray(); ｝ 返回res; ｝

一个非常好的替代是iTextSharp的免费版本

在版本4.1.6之前，iTextSharp是在LGPL许可下授权的，而4.16之前的版本(或者也可能有分叉)是作为包提供的，可以自由使用。当然有人可以使用5+付费版本。

我尝试在我的项目中集成wkhtmltopdf解决方案，遇到了一堆障碍。

我个人会避免在托管企业应用程序上使用基于wkhtmltopdf的解决方案，原因如下。

First of all wkhtmltopdf is C++ implemented not C#, and you will experience various problems embedding it within your C# code, especially while switching between 32bit and 64bit builds of your project. Had to try several workarounds including conditional project building etc. etc. just to avoid "invalid format exceptions" on different machines. If you manage your own virtual machine its ok. But if your project is running within a constrained environment like (Azure (Actually is impossible withing azure as mentioned by the TuesPenchin author) , Elastic Beanstalk etc) it's a nightmare to configure that environment only for wkhtmltopdf to work. wkhtmltopdf is creating files within your server so you have to manage user permissions and grant "write" access to where wkhtmltopdf is running. Wkhtmltopdf is running as a standalone application, so its not managed by your IIS application pool. So you have to either host it as a service on another machine or you will experience processing spikes and memory consumption within your production server. It uses temp files to generate the pdf, and in cases Like AWS EC2 which has really slow disk i/o it is a big performance problem. The most hated "Unable to load DLL 'wkhtmltox.dll'" error reported by many users.

——PRE编辑部分——

对于任何想要在更简单的应用程序/环境中从html生成pdf的人，我把我的旧帖子作为建议。

TuesPechkin

https://www.nuget.org/packages/TuesPechkin/

或专为MVC Web应用程序 (但我认为你可以在任何。net应用程序中使用它)

旋转

https://www.nuget.org/packages/Rotativa/

他们都利用了 Wkhtmtopdf二进制转换HTML到pdf。它使用webkit引擎来呈现页面，因此它也可以解析css样式表。

它们提供了易于使用的与c#的无缝集成。

Rotativa还可以从任何Razor View直接生成pdf。

此外，对于现实世界的web应用程序，他们还管理线程安全等…

HTML到PDF的转换大多依赖于IE来完成HTML的解析和渲染。这可以打破用户更新他们的IE。这里有一个不依赖IE的。

代码是这样的:

EO.Pdf.HtmlToPdf.ConvertHtml(htmlText, pdfFileName);

像许多其他转换器一样，您可以传递文本、文件名或Url。结果可以保存到文件或流中。

到目前为止，似乎最好的免费。net解决方案是TuesPechkin库，它是wkhtmltopdf本机库的包装。

我现在已经使用单线程版本将几千个HTML字符串转换为PDF文件，它似乎工作得很好。它应该也可以在多线程环境中工作(例如IIS)，但我还没有对此进行测试。

另外，因为我想使用最新版本的wkhtmltopdf(在编写时为0.12.5)，我从官方网站下载了DLL，复制到我的项目根目录，设置copy to output为true，并像这样初始化库:

var dllDir = AppDomain.CurrentDomain.BaseDirectory;
Converter = new StandardConverter(new PdfToolset(new StaticDeployment(dllDir)));

上面的代码看起来完全是“wkhtmltox.dll”，所以不要重命名文件。我使用的是64位版本的DLL。

确保你阅读了多线程环境的说明，因为你只需要在每个应用生命周期中初始化它一次，所以你需要把它放在一个单例或其他东西中。

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。

最好的工具，我发现和用于生成javascript和样式渲染视图或html页面的PDF是phantomJS。

下载带有rasterize.js函数的.exe文件，在示例文件夹的exe根目录下找到，并放入解决方案。

它甚至允许你下载文件在任何代码，而不打开该文件，它也允许下载文件时，风格和特别是jquery应用。

以下代码生成PDF文件:

public ActionResult DownloadHighChartHtml()
{
    string serverPath = Server.MapPath("~/phantomjs/");
    string filename = DateTime.Now.ToString("ddMMyyyy_hhmmss") + ".pdf";
    string Url = "http://wwwabc.com";

    new Thread(new ParameterizedThreadStart(x =>
    {
        ExecuteCommand(string.Format("cd {0} & E: & phantomjs rasterize.js {1} {2} \"A4\"", serverPath, Url, filename));
                           //E: is the drive for server.mappath
    })).Start();

    var filePath = Path.Combine(Server.MapPath("~/phantomjs/"), filename);

    var stream = new MemoryStream();
    byte[] bytes = DoWhile(filePath);

    Response.ContentType = "application/pdf";
    Response.AddHeader("content-disposition", "attachment;filename=Image.pdf");
    Response.OutputStream.Write(bytes, 0, bytes.Length);
    Response.End();
    return RedirectToAction("HighChart");
}



private void ExecuteCommand(string Command)
{
    try
    {
        ProcessStartInfo ProcessInfo;
        Process Process;

        ProcessInfo = new ProcessStartInfo("cmd.exe", "/K " + Command);

        ProcessInfo.CreateNoWindow = true;
        ProcessInfo.UseShellExecute = false;

        Process = Process.Start(ProcessInfo);
    }
    catch { }
}


private byte[] DoWhile(string filePath)
{
    byte[] bytes = new byte[0];
    bool fail = true;

    while (fail)
    {
        try
        {
            using (FileStream file = new FileStream(filePath, FileMode.Open, FileAccess.Read))
            {
                bytes = new byte[file.Length];
                file.Read(bytes, 0, (int)file.Length);
            }

            fail = false;
        }
        catch
        {
            Thread.Sleep(1000);
        }
    }

    System.IO.File.Delete(filePath);
    return bytes;
}