public void Update(Product item)
{
throw new NotImplementedException();
}
public bool Remove(Product item)
{
throw new NotImplementedException();
}
public void CopyTo(Product[] array, int arrayIndex)
{
throw new NotImplementedException();
}
public bool Contains(Product item)
{
throw new NotImplementedException();
}
/// <summary>
/// Verifies whether a specified product has already been added to the order
/// </summary>
/// <param name="product">The product to search for</param>
/// <returns>True if the product is found; otherwise, false</returns>
private bool ContainsProduct(Product product)
{
Contract.Requires<ArgumentNullException>(product!=null, "product");
var count = (from i in this._Items where i.Product.Id == product.Id select i).Count();
return count != 0;
}
/// <summary>
/// Adds a product to an order
/// </summary>
/// <param name="product">The product to add to the order</param>
/// <param name="discount">The discount rate to apply</param>
/// <param name="quantity">The quantity to order</param>
/// <exception cref="ArgumentException">Thrown if the order already contains the product or the quantity is zero</exception>
public virtual void AddProduct(Product product, float discount, short quantity)
{
if(ContainsProduct(product))
{
throw new ArgumentException("This order already contains the specified product", "product");
}
if (quantity <= 0)
{
throw new ArgumentException("Quantity cannot be zero or less", "quantity");
}
OrderItem item = new OrderItem();
item.Product = product;
item.Discount = discount;
item.Quantity = quantity;
item.UnitPrice = product.UnitPrice;
this._Items.Add(item);
}
