asp.net服务器时间同步(实时显示服务器时间)

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<%@ Page Language="C#" EnableViewState="false" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["t"] != null)
        {
            Response.Clear();
            Response.Write(DateTime.Now.ToString());
            Response.End();
        }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        var ajax = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Msxml2.XMLHTTP");
        function getProcess() {
            ajax.open("GET", "<%=Request.Url.ToString() %>?t=" + Date.parse(new Date()), true);
            ajax.onreadystatechange = function() {
                if (ajax.status == 200) {
                    if (ajax.readyState == 4) {
                        document.getElementById("bar").innerHTML = ajax.responseText;
                    }
                }
            }
            ajax.send(null)

        }
        window.setInterval("getProcess()", 1000)
    </script>
</head>
<body>
    <form id="form1" runat="server"></form>
    <div id="bar"></div>
</body>
</html>