1、安装引用PuppeteerSharp

1）使用Nuget界面管理器

直接分别搜索 "PuppeteerSharp"，找到对应的点安装即可。

相关文档：VS(Visual Studio)中Nuget的使用

2）使用Package Manager命令安装

PM> Install-Package PuppeteerSharp

2、使用PuppeteerSharp将URL中HTML转换PDF

Puppeteer Sharp 是官方Node.JS Puppeteer API的 .NET API，使用PuppeteerSharp将HTML转换PDF。转换代码如下，

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using PuppeteerSharp;
using PuppeteerSharp.Media;

namespace ConsoleApplication
{
    class Program
    {
        public static string outputFile { get; private set; }

 
        async static void Main(string[] args)
        {
            using var browserFetcher = new BrowserFetcher();
            outputFile = "/home/cjavapy.pdf";
            await browserFetcher.DownloadAsync(BrowserFetcher.DefaultChromiumRevision);
            var browser = await Puppeteer.LaunchAsync(new LaunchOptions
            {
                Headless = true
            });
            var page = await browser.NewPageAsync();
            await page.GoToAsync("http://www.google.com");
            await page.PdfAsync(outputFile, new PdfOptions
            {
                Format = PaperFormat.A4,
                DisplayHeaderFooter = true,
                MarginOptions = new MarginOptions
                {
                    Top = "20px",
                    Right = "20px",
                    Bottom = "40px",
                    Left = "20px"
                },
                FooterTemplate = "Footer Text"
            });
            Console.ReadKey();
        }
    }
}

3、将 HTML 字符串转换为 PDF

HTML字符串也可以使用PuppeteerSharp转换为PDF。代码如下，

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using PuppeteerSharp;
using PuppeteerSharp.Media;

namespace ConsoleApplication
{
    class Program
    {
        public static string outputFile { get; private set; }


        async static void Main(string[] args)
        {

            using var browserFetcher = new BrowserFetcher();
            outputFile = "/home/cjavapy.pdf";
            await browserFetcher.DownloadAsync(BrowserFetcher.DefaultChromiumRevision);
            var browser = await Puppeteer.LaunchAsync(new LaunchOptions
            {
                Headless = true
            });
            //var page = await browser.NewPageAsync();
            using (var page = await browser.NewPageAsync())
            {
                await page.SetContentAsync("www.cjavapy.com");
                var result = await page.GetContentAsync();
                await page.PdfAsync(outputFile, new PdfOptions
                {
                    Format = PaperFormat.A4,
                    DisplayHeaderFooter = true,
                    MarginOptions = new MarginOptions
                    {
                        Top = "20px",
                        Right = "20px",
                        Bottom = "40px",
                        Left = "20px"
                    },
                    FooterTemplate = "Footer Text"
                });

                Console.ReadKey();
            }
        }
    }
}