한글 들어있는 개수 리턴하는 함수

  static int hanglechk(string str)
        {
            int cnt = 0;

            char[] values = str.ToCharArray();
            foreach (char c in values)
            {
                int value = Convert.ToInt32(c);

                if (value >= 0x80)
                {
                    cnt++;
                }
            }

            return cnt;

        }