if (Membership.ValidateUser(username, password))

    {

      string userData = "ApplicationSpecific data for this user.";



      FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1,

        username,

        DateTime.Now,

        DateTime.Now.AddMinutes(30),

        isPersistent,

        userData,

        FormsAuthentication.FormsCookiePath);



      // Encrypt the ticket.

      string encTicket = FormsAuthentication.Encrypt(ticket);



      // Create the cookie.

      Response.Cookies.Add(new HttpCookie(FormsAuthentication.FormsCookieName, encTicket));



      // Redirect back to original URL.

      Response.Redirect(FormsAuthentication.GetRedirectUrl(username, isPersistent));

    }

    else

    {

      Msg.Text = "Login failed. Please check your user name and password and try again.";

    }