/// <summary>
 /// Create a new Discount object.
 /// </summary>
 /// <param name="id">Initial value of the Id property.</param>
 /// <param name="guestId">Initial value of the GuestId property.</param>
 /// <param name="amount">Initial value of the Amount property.</param>
 public static Discount CreateDiscount(global::System.Int32 id, global::System.Int32 guestId, global::System.Double amount)
 {
     Discount discount = new Discount();
     discount.Id = id;
     discount.GuestId = guestId;
     discount.Amount = amount;
     return discount;
 }
        /// <summary>
        /// Handles the Click event of the GrantDiscountButton control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
        private void GrantDiscountButton_Click(object sender, EventArgs e)
        {
            double discountValue;
            double.TryParse(this.Form.DiscountTextBox.Text, out discountValue);

            if (discountValue <= 0.0)
            {
                MessageBox.Show(
                    "Podane wartości nie są prawidłowe lub pozostawiono niewypełnione pola.",
                    "Błąd",
                    MessageBoxButtons.OK,
                    MessageBoxIcon.Exclamation,
                    MessageBoxDefaultButton.Button1);

                return;
            }

            var discount = new Discount()
            {
                GuestId = this.ClientID,
                Amount = discountValue
            };

            DataAccess.Instance.Discounts.Add(discount);
            DataAccess.Instance.UnitOfWork.Commit();

            this.RefreshDiscounts();
        }
 /// <summary>
 /// Deprecated Method for adding a new object to the Discounts EntitySet. Consider using the .Add method of the associated ObjectSet&lt;T&gt; property instead.
 /// </summary>
 public void AddToDiscounts(Discount discount)
 {
     base.AddObject("Discounts", discount);
 }