protected void cmdsubmit_Click(object sender, EventArgs e)
{
_discount.Insert(new Model.Discount
{
DiscountPercentage = txtdiscount.Text,
Name = txtname.Text,
ValidityFrom = Calendar1from.SelectedDate.ToString(),
ValidityTo = Calendar2to.SelectedDate.ToString(),
Price = Convert.ToInt32(TxtPrice.Text)
});
}