private String createExpiredTime()
        {
            DateTime d1 = new DateTime(DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day, 0, 0, 0);

            DateTime d2 = d1;

            ExpirationTimeItem item = this.cbExpirationTime.SelectedItem as ExpirationTimeItem;

            switch (item.Value)
            {
            case ExpirationTime.FIFTEEN_DAYS:
                d2 = d1.AddDays(15);
                break;

            case ExpirationTime.THREE_MONTHS:
                d2 = d1.AddMonths(3);
                break;

            case ExpirationTime.SIX_MONTHS:
                d2 = d1.AddMonths(6);
                break;

            case ExpirationTime.ONE_YEAR:
                d2 = d1.AddYears(1);
                break;

            case ExpirationTime.TWO_YEARS:
                d2 = d1.AddYears(2);
                break;

            case ExpirationTime.UNLIMITED:
                d2 = d1;
                break;
            }

            if (d1 == d2)
            {
                return("0");
            }

            return(d1.Ticks.ToString() + "-" + d2.Ticks.ToString());
        }
        private void initExpirationTimeList()
        {
            ExpirationTimeItem item0 = new ExpirationTimeItem();

            item0.Text  = "15 Days";
            item0.Value = ExpirationTime.FIFTEEN_DAYS;
            this.cbExpirationTime.Items.Add(item0);

            ExpirationTimeItem item1 = new ExpirationTimeItem();

            item1.Text  = "3 Months";
            item1.Value = ExpirationTime.THREE_MONTHS;
            this.cbExpirationTime.Items.Add(item1);

            ExpirationTimeItem item2 = new ExpirationTimeItem();

            item2.Text  = "6 Months";
            item2.Value = ExpirationTime.SIX_MONTHS;
            this.cbExpirationTime.Items.Add(item2);

            ExpirationTimeItem item3 = new ExpirationTimeItem();

            item3.Text  = "1 Year";
            item3.Value = ExpirationTime.ONE_YEAR;
            this.cbExpirationTime.Items.Add(item3);

            ExpirationTimeItem item4 = new ExpirationTimeItem();

            item4.Text  = "2 Years";
            item4.Value = ExpirationTime.TWO_YEARS;
            this.cbExpirationTime.Items.Add(item4);

            ExpirationTimeItem item5 = new ExpirationTimeItem();

            item5.Text  = "Unlimited";
            item5.Value = ExpirationTime.UNLIMITED;
            this.cbExpirationTime.Items.Add(item5);

            this.cbExpirationTime.SelectedIndex = 3;
        }