.NET使用DinkToPdf将HTML转成PDF的示例代码

0.介绍

C# .NET Core wrapper for wkhtmltopdf library that uses Webkit engine to convert HTML pages to PDF.

最近浏览文章的时候发现DinkToPdf框架，可以利用HTML转换成PDF，与我早期使用ITextSharp 框架构建PDF的方式不太一样。DinkToPdf直接将HTML转成PDF，HTML的构造直观且简单。这种方式可能可以成为不错的选择！
下面为大家简单介绍DinkToPdf的使用方式。

1. 参考资料

Github https://github.com/rdvojmoc/DinkToPdf

2.核心内容

构造HtmlToPdfDocument对象Html文本形式

string html = @"<!DOCTYPE html>
<html>
<head> 
<meta charset='utf-8'> 
<title>W3Cschool</title> 
</head>
<body>

<h4>Html文本</h4>

</body>
</html>

var doc = new HtmlToPdfDocument()
{
 GlobalSettings = {
  ColorMode = ColorMode.Color,
  Orientation = Orientation.Landscape,
  PaperSize = PaperKind.A4,
 },
 Objects = {
  new ObjectSettings() {
   PagesCount = true,
   HtmlContent = htmlContent,
   WebSettings = { DefaultEncoding = "utf-8" },
   HeaderSettings = { FontSize = 9, Right = "Page [ page ] of [ toPage ]", Line = true },
   FooterSettings = { FontSize = 9, Right = "Page [ page ] of [ toPage ]" }
  }
 }
};

URL方式

string url = ""https://www.baidu.com/";
var doc = new HtmlToPdfDocument()
{
 GlobalSettings = {
  PaperSize = PaperKind.A4Small
 },

 Objects = {
  new ObjectSettings()
  {
   Page = url,
  }
 }
};

HtmlToPdfDocument 转成 PDF

var converter = new BasicConverter(new PdfTools());

byte[] pdf = converter.Convert(doc);

生成PDF

if (!Directory.Exists("Files"))
{
 Directory.CreateDirectory("Files");
}

using (FileStream stream = new FileStream(@"Files\" + DateTime.UtcNow.Ticks.ToString() + ".pdf", FileMode.Create))
{
 stream.Write(pdf, 0, pdf.Length);
}

注意点

框架依赖于wkhtmltopdf，在自己部署的时候如果提示缺少dll，记得去官方Git上下载（样例源码已经复制了64位的dll）

https://github.com/rdvojmoc/DinkToPdf/tree/master/v0.12.4