UTF8

Question

        public ActionResult Index()
        {
            ViewBag.Message = "欢迎使用 ASP.NET MVC!";            using (var sha = new SHA1CryptoServiceProvider())
            {
                ViewBag.Message2 = Encoding.UTF8.GetBytes("xie");
                ViewBag.Message3 = BitConverter.ToString(sha.ComputeHash(Encoding.UTF8.GetBytes("x"))).Replace("-", "");
                ViewBag.Message4 = BitConverter.ToString(sha.ComputeHash(Encoding.UTF8.GetBytes("i"))).Replace("-", "");
                ViewBag.Message5 = BitConverter.ToString(sha.ComputeHash(Encoding.UTF8.GetBytes("e"))).Replace("-", "");
            }            return View();
        }
问题：第一行怎么打印的是System.Byte[] ；
MSDN上例子内容多，一下看不懂，来问下，http://msdn.microsoft.com/zh-cn/library/system.text.encoding.utf8.aspxSystem.Byte[] 
11F6AD8EC52A2984ABAAFD7C3B516503785C2072042DC4512FA3D391C5170CF3AA61E6A638F8434246680A665D08484A28860B87789DF9DB712F8F84

Answer 1

ViewBag.Message2 = Encoding.UTF8.GetBytes("xie");相当于System.Byte[] x= Encoding.UTF8.GetBytes("xie");
ViewBag.Message2 = x.ToString()
System.Byte[]类型的.ToString()结果就是
打印的是System.Byte[] ；

Answer 2

ViewBag.Message2 = string.Join("", Encoding.UTF8.GetBytes("xie").Select(x => x.ToString("X").PadLeft(2, '0')).ToArray());

Answer 3

我要得到 "xie" 的 utf8 编码该怎么写？