C#如何在HTML中查找1x1图像标签

using System;
using System.Net;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        string htmlContent = ""; // 这里填入你要查找的HTML内容

        // 使用正则表达式匹配1x1图像标签
        string pattern = "<img[^>]+width=[\"']?1[\"']?[^>]+height=[\"']?1[\"']?[^>]*>";
        Regex regex = new Regex(pattern);
        MatchCollection matches = regex.Matches(htmlContent);

        // 输出匹配到的标签
        foreach (Match match in matches)
        {
            Console.WriteLine(match.Value);
        }
    }
}