Simple Authentication and registration process for a website through Membership schema

if (Membership.ValidateUser(Login1.UserName, Login1.Password))
        {
            FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, Login1.UserName, DateTime.Now, DateTime.Now.AddMinutes(50), Login1.RememberMeSet, "demo");
            string hashticket = FormsAuthentication.Encrypt(ticket);

            HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hashticket);
            Response.Cookies.Add(cookie);

            string returnUrl = Request.QueryString["ReturnUrl"];
            if (returnUrl == null) returnUrl = "~/Default.aspx";

            Response.Redirect(returnUrl);
        }