protected void SubmitButton_Click(object sender, EventArgs e)
    {
        ClubBAIST   cb = new ClubBAIST();
        Reservation r  = cb.ReadReservation(int.Parse(Request.QueryString["r"]));
        bool        b  = cb.UpdateReservation(int.Parse(Request.QueryString["r"]), r.UserID, int.Parse(CourseDD.SelectedValue), DateTime.Parse(TeeTimesDD.SelectedValue), int.Parse(NumberHolesDD.SelectedValue), int.Parse(NumberCartsDD.SelectedValue), Player2TB.Text, Player3TB.Text, Player4TB.Text);

        if (!b)
        {
            //Response.Write("Something went wrong.");
        }
        else
        {
            Response.Redirect("ViewReservations.aspx?r=" + r.UserID);
        }
    }