Logout Issue

On all pages Page_Load event add this line

Response.Cache.SetCacheability(HttpCacheability.NoCache);

After adding all page load event and master page load event it will navigate to previous page. I want clear Explanation Please.....

Its very Urgent........

It will navigate. To avoid that you will have to check Session on each page and redirect to login page if session is null

if(Session["id"] == null)
{
Response.Redirect("Login.aspx");
}

Thanks...