excel“引用：”C#中的like控件

using System;
using System.Text.RegularExpressions;

public class Program
{
    public static void Main()
    {
        string input = "This is a sample string for testing.";

        // 使用正则表达式进行模式匹配
        string pattern = "is";
        MatchCollection matches = Regex.Matches(input, pattern);

        // 输出匹配结果
        foreach (Match match in matches)
        {
            Console.WriteLine("匹配到的字符串: " + match.Value);
            Console.WriteLine("匹配到的字符串的起始位置: " + match.Index);
        }
    }
}