utf-8是否带签名 乱码问题。

 Encoding utf8 = new UTF8Encoding(true);

 Encoding utf8 = new UTF8Encoding(true);
        ////utf8.s = "65001";

        //var utf8 = System.Text.Encoding.GetEncoding(65001);
        var bys = utf8.GetBytes("测试生成页面" + DateTime.Now.ToString());
        System.IO.File.WriteAllBytes(Server.MapPath("~/") + "b.html", bys);

        File.WriteAllText(Server.MapPath("~/") + "a.html", Encoding.UTF8.GetString(bys) + ",最新", new UTF8Encoding(true));