//Update Discounts with exception handling
protected void DiscountGridView_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
try
{
GridViewRow row = DiscountGridView.Rows[e.RowIndex];
string discountId = (row.FindControl("Label1") as Label).Text;
short discountAmt = short.Parse((row.FindControl("TextBox2") as TextBox).Text);
DateTime validStart = (row.FindControl("Calendar3") as Calendar).SelectedDate;
int discountDuration = Convert.ToInt32((row.FindControl("TextBox4") as TextBox).Text);
int catID = Convert.ToInt32((row.FindControl("DDL5") as TextBox).Text);
BusinessLogic.UpdateCategoryDiscount(discountId, discountAmt, validStart, discountDuration, catID);
DiscountGridView.EditIndex = -1;
DiscountGridView.DataSource = BusinessLogic.CDiscount();
DiscountGridView.DataBind();
Label8.Text = "Update success!";
}
catch (Exception)
{
Label8.Text = "Please input a valid discount amount, duration and category.";
}
}