DevGuru VBScript Object: Dictionary



			OBJECT: Dictionary Implemented in version 2.0 The Dictionary object stores name/value pairs (referred to as the key and item respectively) in an array. The key is a unique identifier for the corresponding item and cannot be used for any other item in the same Dictionary object. The following code creates a Dictionary object called "cars", adds some key/item pairs, retrieves the item value for the key 'b' using the Item property and then outputs the resulting string to the browser. Code: <% Dim cars Set cars = CreateObject("Scripting.Dictionary") cars.Add "a", "Alvis" cars.Add "b", "Buick" cars.Add "c", "Cadillac" Response.Write "The value corresponding to the key 'b' is " & cars.Item("b") %> Output: "The value corresponding to the key 'b' is Buick" PROPERTIES CompareMode Property The CompareMode property is used to set and return the key's string comparison mode which determines how keys are matched while looking up or searching. Syntax: object.CompareMode[ = comparison_mode] Count Property The Count property is used to determine the number of key/item pairs in the Dictionary object. Syntax: object.Count Item Property The Item property allows us to retreive the value of an item in the collection designated by the specified key argument and also to set that value by using itemvalue. Syntax: object.Item(key) [ = itemvalue] Key Property The Key property lets us change the key value of an existing key/item pair. Syntax: object.Key(keyvalue) = newkeyvalue METHODS Add Method The Add method is used to add a new key/item pair to a Dictionary object. Syntax: object. Addkeyvalue, itemvalue Exists Method The Exists method is used to determine whether a key already exists in the specified Dictionary. Returns True if it does and False otherwise. Syntax: object.Exists(keyvalue) Items Method The Items method is used to retreive all of the items in a particular Dictionary object and store them in an array. Syntax: [arrayname = ]object.Items Keys Method The Keys method is used to retreive all of the keys in a particular Dictionary object and store them in an array. Syntax: [arrayname = ]object.Keys Remove Method The Remove method is used to remove a single key/item pair from the specified Dictionary object. Syntax: object. Remove(keyvalue) RemoveAll Method The RemoveAll method is used to remove all the key/item pairs from the specified Dictionary object. Syntax: object.RemoveAll