using System;

using System.IO;

using AngleSharp;

using System.Linq;

using System.Text.RegularExpressions;

using System.Web;

​

public class Program

{

    public static void Main()

    {

        var config = Configuration.Default.WithDefaultLoader();

        var context = BrowsingContext.New(config);

        var document =   context.OpenAsync("https://avaloniaui.github.io/icons.html").Result;

​

        var codeElements = document.QuerySelectorAll("code");

​

        string outputPath = "output.html"; // 定义输出文件路径

​

        using (StreamWriter writer = new StreamWriter(outputPath))

        {

            foreach (var codeElement in codeElements)

            {

                string cleanText = RemoveHtmlTagsAndKeepContent(codeElement.InnerHtml);

                //cleanText = cleanText.Replace("&amp;lt;","<"); // 转义<和>

                //cleanText = cleanText.Replace("="","\"");

                cleanText = cleanText.Replace(";>",">");

                cleanText = cleanText.Replace("&lt;","<");

                cleanText = cleanText.Replace(">",">");

                Console.WriteLine(cleanText);

            }

        }

​

        Console.WriteLine("所有<code>标签的内容已写入到文件中。");

    }

    static string RemoveHtmlTagsAndKeepContent(string input)

    {

        // 使用正则表达式匹配所需内容

        string pattern = @"<[^>]*>";

        string cleanText = Regex.Replace(input, pattern, String.Empty);

​

        return cleanText;

    }

}