//Add new promotion with exception handling
protected void AddPromo_Click(object sender, EventArgs e)
{
try
{
PromoGridView.Visible = false;
BusinessLogic.CreatePromoCode(PromoTB.Text, short.Parse(PromoDisc.Text), ValidSCal.SelectedDate, Convert.ToInt32(PromoDur.Text));
Label6.Text = "Promo Created!";
PromoTB.Text = "";
PromoDisc.Text = "";
PromoDur.Text = "";
PCalVal.Text = "";
}
catch (Exception)
{
Label6.Text = "Please enter a unique Promo Code";
}
}