asp.net中的会话注销

我有一个登录页面(default.aspx)，然后是2个asp.net页面(page1.aspx，page2.aspx)在带有注销按钮的母版页下.当我单击注销时，它使会话为空，因此注销.

I have a login page(default.aspx) followed by 2 asp.net pages(page1.aspx,page2.aspx) under a masterpage with logout button. When I click logout,it makes the session null and hence logout.

但是注销后，当我将page1.aspx的网址放入地址栏中时，它将再次显示该页面(page1.aspx).

But after logging out when I put the url of page1.aspx in the address bar, it displays the page(page1.aspx) again.

我的注销按钮代码:

Session["id"] = null;
Response.Redirect("Default.aspx");
Response.Cache.SetNoStore();
Response.CacheControl = "no-cache";