private string escape(string s)
        {
            StringBuilder sb = new StringBuilder();
            byte[] ba = System.Text.Encoding.Unicode.GetBytes(s);
            for (int i = 0; i < ba.Length; i += 2)
            {    /**///// BE SURE 2's
                sb.Append("%u");
                sb.Append(ba[i + 1].ToString("X2"));
                sb.Append(ba[i].ToString("X2"));
            }
            return sb.ToString();
           
        }本文出自 51CTO.COM技术博客