C# 字符串 转换 16进制字符串 %u5645%u5645

        public static string Get16String(string str)        {            StringBuilder sb = new StringBuilder();            byte[] bytes = System.Text.Encoding.Unicode.GetBytes(str);            for (int i = 0; i < bytes.Length; i += 2)            {                sb.Append("%u");                sb.Append(bytes[i + 1].ToString("X2"));                sb.Append(bytes[i].ToString("X2"));            }            return sb.ToString();        }