<script language=javascript>
var t1 = new Date().getTime();
</script>

<SCRIPT LANGUAGE="JavaScript">
window.onload = function()
{
document.getElementById("TimeShow").innerHTML = "加載本頁耗時 "+ (new Date().getTime()-t1) +" 毫秒";
}
</SCRIPT>

protected DateTime dt;
protected void Page_Load(object sender, EventArgs e)
{
}
protected override void OnPreInit(EventArgs e)
{
dt = DateTime.Now;
base.OnPreInit(e);
}
protected override void OnLoadComplete(EventArgs e)
{
base.OnLoadComplete(e);
TimeSpan ts = DateTime.Now - dt;
Response.Write("加載頁面用時：" + ts.TotalMilliseconds);
}