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The Dictionary Object

The Dictionary object is used to store information in name/value pairs (referred to as key and item). The Dictionary object might seem similar to Arrays, however, the Dictionary object is a more desirable solution to manipulate related data.

Comparing Dictionaries and Arrays:

• Keys are used to identify the items in a Dictionary object
• You do not have to call ReDim to change the size of the Dictionary object
• When deleting an item from a Dictionary, the remaining items will automatically shift up
• Dictionaries cannot be multidimensional, Arrays can
• Dictionaries have more built-in functions than Arrays
• Dictionaries work better than arrays on accessing random elements frequently
• Dictionaries work better than arrays on locating items by their content

The following example creates a Dictionary object, adds some key/item pairs to it, and retrieves the item value for the key gr:

<%
Dim d
Set d=Server.CreateObject("Scripting.Dictionary")
d.Add "re","Red"
d.Add "gr","Green"
d.Add "bl","Blue"
d.Add "pi","Pink"
Response.Write("The value of key gr is: " & d.Item("gr"))
%>

The value of key gr is: Green 

The Dictionary object's properties and methods are described below:

Properties

Methods