登陆后设置cookie的方法

 public void SetCookie(string userName, string role,string cookieValueName)
    {FormsAuthentication.FormsCookieName
        FormsAuthenticationTicket myTick = new FormsAuthenticationTicket(1, userName, System.DateTime.Now.AddMinutes(30),DateTime.Now, false, role);
        string encryptTick=FormsAuthentication.Encrypt(myTick);
        HttpCookie myCookie = new HttpCookie(cookieValueName,encryptTick);
        myCookie.Expires = System.DateTime.Now.AddMinutes(30);
        HttpContext.Current.Response.Cookies.Add(myCookie);
    }