Dynamic size two dimensional array - arrays

Question

I'm currently working on a webshop. For that i need to make a two dimensional array to store the items moved to the cart.
Cart:
Cart = Session("Cart")
Items = Session("Items")
And when an item is moved to the cart:
Items = Items + 1
Cart(1,Items) = Items
Cart(2,Items) = rs("id")
Cart(3,Items) = Request("attr")
Cart(4,Items) = rs("name")
Cart(5,Items) = rs("price")
Cart(6,Items) = 1
And finally:
Session("Cart") = Cart
Session("Items") = Items
But i'm having issues with the asp lack of proper support of dynamic sized two-dimensional arrays. Or am i just taking it the wrong way? Can you help me?

Answer 1

You might want to create some objects instead of using arrays. Or even a structure, if it's got no methods.
Here's an expamle of a struct
/// <summary>
/// Custom struct type, representing a rectangular shape
/// </summary>
struct Rectangle
{
/// <summary>
/// Backing Store for Width
/// </summary>
private int m_width;
/// <summary>
/// Width of rectangle
/// </summary>
public int Width
{
get
{
return m_width;
}
set
{
m_width = value;
}
}
/// <summary>
/// Backing store for Height
/// </summary>
private int m_height;
/// <summary>
/// Height of rectangle
/// </summary>
public int Height
{
get
{
return m_height;
}
set
{
m_height = value;
}
}
}
so now you can:
Cart[0] = new Rectangle{Width = 1,Height = 3};
or
Rectangle myRec = new Rectangle();
myRec.Height = 3;
myRec.Width = 1;
Cart[0] = myRec;
Swap the Rectangle example with Item, and you should be on your way.
That way, a single instance of each Cart multiple Items that each have their own set of properties.

Answer 2

Would it not be simpler to store a ShoppingSessionID for the user that's related to a table that stores a list of items in the cart? that way all you have to store is Session("ShoppingSessionID").

Answer 3

It seems to me that your problem could be solved with a dynamically sized list of item objects. In that case you would want to create an Item class and then add to the Cart list a new Item object for each new item.