Role Based Form Authentication is not working

I was trying to implement role based form authentication but in the end cookie not contain roles though i have provided.

Login.aspx

if (Login1.UserName == "user" && Login1.Password == "user")
       {
           string role = "admin,member";

           FormsAuthenticationTicket t = new FormsAuthenticationTicke(1,Login1.UserName,DateTime.Now, DateTime.Today, false, role,"/");
           string cookiester = FormsAuthentication.Encrypt(t);
           HttpCookie cookie = new HttpCookie      (FormsAuthentication.FormsCookieName,cookiester);
           Response.Cookies.Add(cookie);
           if (t.IsPersistent)
           {
               cookie.Expires = t.Expiration;
           }
           String strRedirect = Request["ReturnUrl"];
           if (strRedirect == null)
           {
               strRedirect = "Default.aspx";
               Response.Redirect(strRedirect);
           }

          if(HttpContext.Current.User.IsInRole("admin"))
          {

           Response.Redirect("Secure/Secure.aspx");
          }
          }
       }
     }

Here i am taking "user" and provideing him "admin" rights.
Only admin role can log in to the "Secure\Secure.aspx" as per my web config:

<location path="Secure">
	<system.web>
		<authorization>
			<allow roles="admin" />
			<deny users="*" />
		</authorization>
	</system.web>
</location> 

My global.aspx contains:

protected void Application_AuthenticateRequest(Object sender, EventArgs e)
{
    HttpCookie authCookie =Context.Request.Cookies,FormsAuthentication.FormsCookieName];
    if (authCookie != null) 
    {
        FormsAuthenticationTicket t = FormsAuthentication.Decrypt(authCookie.Value);
        string[] roles = t.UserData.Split(new Char[] { ',' });
        GenericPrincipal userPrincipal = 
new GenericPrincipal(new GenericIdentity    (t.Name), roles);
        Context.User = userPrincipal; 
        
    }
}

What is wrong in this code? Why i cant use "admin" roles in this?

Tags: C#, ASP.NET