当行匹配regex - C#时，停止添加到List<String>

using System;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;

public class Program
{
    public static void Main()
    {
        List<string> matchedStrings = new List<string>();
        string pattern = "your_regex_pattern"; // 替换为你的正则表达式模式

        using (StreamReader reader = new StreamReader("your_file_path")) // 替换为你的文件路径
        {
            string line;
            while ((line = reader.ReadLine()) != null)
            {
                if (Regex.IsMatch(line, pattern))
                {
                    matchedStrings.Add(line);
                    break; // 当匹配成功时，停止添加匹配的字符串到List<String>中
                }
            }
        }

        // 输出匹配的字符串
        foreach (string matchedString in matchedStrings)
        {
            Console.WriteLine(matchedString);
        }
    }
}