public int CreateBooking(DateTime BookingDate, DateTime ExpiryDate)
        {
            SqlConnection conn = cc.GetConnection();

            using (conn)
            {
                SqlCommand cmd = new SqlCommand("sp_CreateBooking", conn);
                cmd.CommandType = System.Data.CommandType.StoredProcedure;

                cmd.Parameters.AddWithValue("@BookingDate", BookingDate);
                cmd.Parameters.AddWithValue("@ExpiryDate", ExpiryDate);
                cmd.Parameters.Add("@ID", SqlDbType.Int).Direction = ParameterDirection.Output;

                cmd.ExecuteNonQuery();
                int iID = Convert.ToInt32(cmd.Parameters["@ID"].Value);
                conn.Close();
                return(iID);
            }
        }