Design Pattern Framework 3.5
ShoppingCart Class
Patterns-In-Action! Application ► Cart ► ShoppingCart
A non-persistent shopping cart. It would be simple to create a
shopping cart table in the database and make it persistent.
Declaration Syntax| C# | Visual Basic |
public class ShoppingCart
Public Class ShoppingCart
Members| All Members | Constructors | Methods | Properties | ||
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ShoppingCart()()() |
Default constructor. Sets standard shipping method as Fedex.
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ShoppingCart(ShippingMethod) |
Constructor for shopping cart.
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AddItem(Int32, String, Int32, Double) |
Adds a product item to the shopping cart.
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Equals(Object) | (Inherited from Object.) |
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Finalize()()() |
Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection.
(Inherited from Object.) |
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GetHashCode()()() |
Serves as a hash function for a particular type.
(Inherited from Object.) |
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GetType()()() |
Gets the Type of the current instance.
(Inherited from Object.) |
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Items |
Gets datatable holding shopping cart data.
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MemberwiseClone()()() |
Creates a shallow copy of the current Object.
(Inherited from Object.) |
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ReCalculate()()() |
Recalculates the total, subtotals, and shipping costs.
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RemoveItem(Int32) |
Removes a product item from the shopping cart.
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Shipping |
Gets shipping cost for all items in shopping cart. Recalculate if needed.
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ShippingMethod |
Gets or sets shipping method, which in turn sets the 'strategy',
i.e. the means at which products are shipped.
This is the Strategy Design Pattern in action.
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SubTotal |
Gets subtotal for all items in the shopping cart. Recalculate if needed.
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ToString()()() | (Inherited from Object.) |
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Total |
Gets total for all items in shopping cart. Recalculate if needed.
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UpdateQuantity(Int32, Int32) |
Updates quantity for a given product in shopping cart.
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Remarks
GoF Design Patterns: Strategy.
Enterprise Design Patterns: Table Module, Data Table Gateway.
The Strategy Pattern is the 'pluggability' of the different shipping methods.
Inheritance Hierarchy| Object | |
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ShoppingCart |