class Program
    {
        static void Main(string[] args)
        {
            if (ContainChinese("含有中文"))
            {
                Console.WriteLine("含有中文");
            } else
            {
                Console.WriteLine("無中文");
            }
            Console.ReadKey();
        }

        /// <summary>
        /// 判斷字符串中是否包含中文
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        private static bool ContainChinese(string input)
        {
            string pattern = "[\u4e00-\u9fbb]";
            return Regex.IsMatch(input, pattern);
        }
    }