//Update PromoGridView with exception handling
protected void UpGV1(object sender, GridViewUpdateEventArgs e)
{
try
{
GridViewRow row = PromoGridView.Rows[e.RowIndex];
string promoCode = (row.FindControl("Label1") as Label).Text;
short discount = short.Parse((row.FindControl("TextBox2") as TextBox).Text);
DateTime validStart = (row.FindControl("Calendar3") as Calendar).SelectedDate;
int promoDuration = Convert.ToInt32((row.FindControl("TextBox4") as TextBox).Text);
BusinessLogic.UpdatePromoCode(promoCode, discount, validStart, promoDuration);
PromoGridView.EditIndex = -1;
PromoGridView.DataSource = BusinessLogic.Promos();
PromoGridView.DataBind();
Label7.Text = "Update success!";
}
catch (Exception)
{
Label7.Text = "Please input a valid discount amount and duration.";
}
}
