//Function creates a new order from given values input by user and updates quantities
private void btnOrder_Click(object sender, EventArgs e)
{
//Creates new purchased item
PurchasedItem order = new PurchasedItem(formItem, formSize, cmbQuant.SelectedIndex + 1);
//Updates total cost of orders
formCharge += order.Cost;
//Adds order description to the text box of total orders
lblTotal.Text = formCharge.ToString("C");
lstOrder.Items.Add(order.ToString());
}
