Forms认证中cookie,角色管理,访问权限

1            FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, "jcj", DateTime.Now, DateTime.Now.AddDays(1), true, "taxt");
2           string encryptedticked =FormsAuthentication.Encrypt(ticket);
3            HttpCookie cookie=new HttpCookie(FormsAuthentication.FormsCookieName,encryptedticked);
4            Response.Cookies.Add(cookie);
5            Response.Redirect("WebForm2.aspx");

 1        protected void Application_AuthenticateRequest(object sender, EventArgs e)
 2        {
 3            HttpApplication app = (HttpApplication)sender;
 4            HttpCookie cookie = Request.Cookies[FormsAuthentication.FormsCookieName];
 5            if (cookie != null)
 6            {
 7                string decryptedticket = cookie.Value;
 8                FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(decryptedticket);
 9                FormsIdentity identity = new FormsIdentity(ticket);
10                string[] role = new string[] { ticket.UserData};
11                System.Security.Principal.GenericPrincipal user = new System.Security.Principal.GenericPrincipal(identity,role);
12                Response.Write(user.Identity.Name+user.IsInRole("taxt"));//返回true
13                Response.Write(user.Identity.Name + user.IsInRole("其他角色"));//返回false
14                Response.Write("<br/>");
15                Context.User = user;
16            }
17        }