using System;

using System.Text.RegularExpressions;

namespace Test

{

    class Program

    {

        //匹配16进制颜色代码的正则模式

        const string pattern = @"\[[0-9a-fA-F]{6}\]";

        const string test1 = "erter[0051e4]terter778t";

        const string test2 = "erter[+051e4]terter778t";

        static void Main(string[] args)

        {

            Regex res = new Regex(pattern);

            if (res.IsMatch(test1))

            {

                Console.WriteLine("匹配成功");

            }

            else

            {

                Console.WriteLine("匹配失败");

            }

            Console.ReadKey();

        }

    }

}