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7i24.Com不停为您服务
一个简单的购物篮源代码
<% ' ***** Begin the functions to be called by the runtime script
*****
' To find the actual runtime code scroll WAY DOWN....
' This function is written to enable the adding of multiples of an
item
' but this sample always just adds one. If you wish to add different
' quantities simply replace the value of the Querystring parameter
count.
' We didn't do this because we wanted to keep the whole thing simple
and
' not get into using forms so it stayed relatively readable.
Sub AddItemToCart(iItemID, iItemCount)
If dictCart.Exists(iItemID) Then
dictCart(iItemID) = dictCart(iItemID) + iItemCount
Else
dictCart.Add iItemID, iItemCount
End If
Response.Write iItemCount & " of item # " & iItemID & " have been
added to your cart.<BR><BR>" & vbCrLf
End Sub
Sub RemoveItemFromCart(iItemID, iItemCount)
If dictCart.Exists(iItemID) Then
If dictCart(iItemID) <= iItemCount Then
dictCart.Remove iItemID
Else
dictCart(iItemID) = dictCart(iItemID) - iItemCount
End If
Response.Write iItemCount & " of item # " & iItemID & " have been
removed from your cart.<BR><BR>" & vbCrLf
Else
Response.Write "Couldn't find any of that item your cart.<BR><BR>" &
vbCrLf
End If
End Sub
Sub ShowItemsInCart()
Dim Key
Dim aParameters ' as Variant (Array)
Dim sTotal, sShipping
%>
<TABLE Border=1 CellPadding=3 CellSpacing=1>
<TR>
<TD>Item #</TD>
<TD>Description</TD>
<TD>Quantity</TD>
<TD>Remove Item From Cart</TD>
<TD>Price</TD>
<TD>Totals</TD>
</TR>
<%
sTotal = 0
For Each Key in dictCart
aParameters = GetItemParameters(Key)
%>
<TR>
<TD ALIGN="Center"><%= Key %></TD>
<TD ALIGN="Left"><%= aParameters(1) %></TD>
<TD ALIGN="Center"><%= dictCart(Key) %></TD>
<TD ALIGN="Left"><A HREF="./shopping.asp?action=del&item=<%= Key %
>&count=1">Remove One</A> <A HREF="./shopping.asp?action=del&item=<%
= Key %>&count=<%= dictCart(Key) %>">Remove All</A></TD>
<TD ALIGN="Right">$<%= aParameters(2) %></TD>
<TD ALIGN="Right">$<%= FormatNumber(dictCart(Key) * CSng(aParameters
(2)),2) %></TD>
</TR>
<%
sTotal = sTotal + (dictCart(Key) * CSng(aParameters(2)))
Next
'Calculate shipping - you might want to pull this out into a function
if your shipping
' calculations are more complicated then ours. ;)
If sTotal <> 0 Then
sShipping = 7.5
Else
sShipping = 0
End If
sTotal = sTotal + sShipping
%>
<TR><TD COLSPAN=5 ALIGN="Right"><B>S+H:</B></TD><TD ALIGN="Right">$<%
= FormatNumber(sShipping,2) %></TD></TR>
<TR><TD COLSPAN=5 ALIGN="Right"><B>Total:</B></TD><TD
ALIGN="Right">$<%= FormatNumber(sTotal,2) %></TD></TR>
</TABLE>
<%
End Sub
Sub ShowFullCatalog()
Dim aParameters ' as Variant (Array)
Dim I
Dim iItemCount ' Number of items we sell
' If you are really going to use this sample this should probably be
pulled from a DB
iItemCount = 3
%>
<TABLE Border=1 CellPadding=3 CellSpacing=1>
<TR>
<TD>Image</TD>
<TD>Description</TD>
<TD>Price</TD>
<TD>Add Item To Cart</TD>
</TR>
<%
For I = 1 to iItemCount
aParameters = GetItemParameters(I)
%>
<TR>
<TD><IMG SRC="<%= aParameters(0) %>"></TD>
<TD><%= aParameters(1) %></TD>
<TD>$<%= aParameters(2) %></TD>
<TD><A HREF="./shopping.asp?action=add&item=<%= I %>&count=1">Add
this to my cart!</A></TD>
</TR>
<%
Next 'I
%>
</TABLE>
<%
End Sub
Sub PlaceOrder()
Dim Key
Dim aParameters ' as Variant (Array)
Dim sTotal, sShipping
%>
<TABLE Border=1 CellPadding=3 CellSpacing=1>
<TR>
<TD>Item #</TD>
<TD>Description</TD>
<TD>Quantity</TD>
<TD>Price</TD>
<TD>Totals</TD>
</TR>
<%
sTotal = 0
For Each Key in dictCart
aParameters = GetItemParameters(Key)
%>
<TR>
<TD ALIGN="Center"><%= Key %></TD>
<TD ALIGN="Left"><%= aParameters(1) %></TD>
<TD ALIGN="Center"><%= dictCart(Key) %></TD>
<TD ALIGN="Right">$<%= aParameters(2) %></TD>
<TD ALIGN="Right">$<%= FormatNumber(dictCart(Key) * CSng(aParameters
(2)),2) %></TD>
</TR>
<%
sTotal = sTotal + (dictCart(Key) * CSng(aParameters(2)))
Next
'Calculate shipping - you might want to pull this out into a function
if your shipping
' calculations are more complicated then ours. ;)
If sTotal <> 0 Then
sShipping = 7.5
Else
sShipping = 0
End If
sTotal = sTotal + sShipping
%>
<TR><TD COLSPAN=4 ALIGN="Right"><B>S+H:</B></TD><TD ALIGN="Right">$<%
= FormatNumber(sShipping,2) %></TD></TR>
<TR><TD COLSPAN=4 ALIGN="Right"><B>Total:</B></TD><TD
ALIGN="Right">$<%= FormatNumber(sTotal,2) %></TD></TR>
</TABLE>
<%
End Sub
' We implemented this this way so if you attach it to a database
you'd only need one call per item
Function GetItemParameters(iItemID)
Dim aParameters ' Will contain 3 string values : image path,
description, price
' However we need to keep price so it can be converted to a
' single for computation hence no currency symbol. This array
' can also be expanded to contain any other information about the
' product that you might want to pull from the DB.
Select Case iItemID
Case 1
aParameters = Array("./images/shop_shirt.gif", "ASP 101 T-
Shirt", "15.00")
Case 2
aParameters = Array("./images/shop_kite.gif", "ASP 101 Kite", "17.50")
Case 3
aParameters = Array("./images/shop_watch.gif", "ASP 101
Watch", "35.00")
Case 4 ' Not in use because we couldn't draw a pen in a few seconds!
aParameters = Array("./images/shop_pen.gif", "ASP 101 Pen", "5.00")
End Select
' Return array containing product info.
GetItemParameters = aParameters
End Function
%>
<% ' ***** Begin the infamous runtime script *****
' Declare our Vars
Dim dictCart ' as dictionary
Dim sAction ' as string
Dim iItemID ' as integer
Dim iItemCount ' as integer
' Get a reference to the cart if it exists otherwise create it
If IsObject(Session("cart")) Then
Set dictCart = Session("cart")
Else
' We use a dictionary so we can name our keys to correspond to our
' item numbers and then use their value to hold the quantity. An
' array would also work, but would be a little more complex and
' probably not as easy for readers to follow.
Set dictCart = Server.CreateObject("Scripting.Dictionary")
End If
' Get all the parameters passed to the script
sAction = CStr(Request.QueryString("action"))
iItemID = CInt(Request.QueryString("item"))
iItemCount = CInt(Request.QueryString("count"))
%>
<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR><TD>
<%
' Select action based on user input
Select Case sAction
Case "add"
AddItemToCart iItemID, iItemCount
ShowItemsInCart
%>
</TD></TR>
<TR><TD ALIGN="right">
<A HREF="./shopping.asp?action="><IMG SRC="./images/shop_look.gif"
BORDER=0 WIDTH=46 HEIGHT=46 ALT="Continue Looking"></A>
<A HREF="./shopping.asp?action=checkout"><IMG
SRC="./images/shop_checkout.gif" BORDER=0 WIDTH=46 HEIGHT=46
ALT="Checkout"></A><BR>
<%
Case "del"
RemoveItemFromCart iItemID, iItemCount
ShowItemsInCart
%>
</TD></TR>
<TR><TD ALIGN="right">
<A HREF="./shopping.asp?action="><IMG SRC="./images/shop_look.gif"
BORDER=0 WIDTH=46 HEIGHT=46 ALT="Continue Looking"></A>
<A HREF="./shopping.asp?action=checkout"><IMG
SRC="./images/shop_checkout.gif" BORDER=0 WIDTH=46 HEIGHT=46
ALT="Checkout"></A><BR>
<%
Case "viewcart"
ShowItemsInCart
%>
</TD></TR>
<TR><TD ALIGN="right">
<A HREF="./shopping.asp?action="><IMG SRC="./images/shop_look.gif"
BORDER=0 WIDTH=46 HEIGHT=46 ALT="Continue Looking"></A>
<A HREF="./shopping.asp?action=checkout"><IMG
SRC="./images/shop_checkout.gif" BORDER=0 WIDTH=46 HEIGHT=46
ALT="Checkout"></A><BR>
<%
Case "checkout"
PlaceOrder
%>
</TD></TR>
<TR><TD ALIGN="left">
<BR>
<H2>Thank you for your order!</H2>
If this had been an actual shopping cart, this is where you would
have had them enter
their personal information and payment method and then taken care of
any backend
processing before finalizing their order. However as this is a
shopping cart sample
and this is where security becomes a problem, we'll leave it for a
future sample.
<%
Case Else ' Shop
ShowFullCatalog
%>
</TD></TR>
<TR><TD ALIGN="right">
<A HREF="./shopping.asp?action=viewcart"><IMG
SRC="./images/shop_cart.gif" BORDER=0 WIDTH=46 HEIGHT=46 ALT="View
Cart Contents"></A>
<%
End Select
' Return cart to Session for storage
Set Session("cart") = dictCart
%>
</TD></TR>
</TABLE>
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