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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>ASP Dictionary Object</h1>
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<p class="intro">The Dictionary object is used to store information in
name/value pairs (referred to as key and item)</p>
<hr />
<h2>Examples</h2>
<p><a target="_blank" href="showasp.asp@filename=demo_exists">Does a specified key exist?</a><br />
This example demonstrates how to first create a Dictionary object, and then use
the Exists method to check if a specified key exists.</p>
<p><a target="_blank" href="showasp.asp@filename=demo_items">Return an array of all items</a><br />
This example demonstrates how to use
the Items method to return an array of all the items.</p>
<p><a target="_blank" href="showasp.asp@filename=demo_keys">Return an array of all keys</a><br />
This example demonstrates how to use
the Keys method to return an array of all the keys.</p>
<p><a target="_blank" href="showasp.asp@filename=demo_item">Return the value of an item</a><br />
This example demonstrates how to use
the Item property to return the value of an item.</p>
<p><a target="_blank" href="showasp.asp@filename=demo_key">Set a key</a><br />
This example demonstrates how to use
the Key property to set a key in a Dictionary object.</p>
<p><a target="_blank" href="showasp.asp@filename=demo_count">Return the number of key/item pairs</a><br />
This example demonstrates how to use
the Count property to return the number of key/item pairs.</p>
<hr />
<h2>The Dictionary Object</h2>
<p>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.</p>
<p>Comparing Dictionaries and Arrays:</p>
<ul>
<li>Keys are used to identify the items in a Dictionary object</li>
<li>You do not have to call ReDim to change the size of the Dictionary object</li>
<li>When deleting an item from a Dictionary, the remaining items will
automatically shift up</li>
<li>Dictionaries cannot be multidimensional, Arrays can</li>
<li>Dictionaries have more built-in functions than Arrays</li>
<li>Dictionaries work better than arrays on accessing random elements
frequently</li>
<li>Dictionaries work better than arrays on locating items by their content</li>
</ul>
<p>The following example creates a Dictionary object, adds some key/item
pairs to it, and retrieves the item value for the key gr:</p>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr valign="top">
<td valign="top">
<pre><%
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"))
%></pre>
<p>Output:</p>
<pre>The value of key gr is: Green </pre>
</td>
</tr>
</table>
<p>The Dictionary object's properties and methods are described below: </p>
<h3>Properties</h3>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr valign="top">
<th width="22%" align="left">Property</th>
<th width="78%" align="left">Description</th>
</tr>
<tr valign="top">
<td><a href="prop_comparemode.asp">CompareMode</a></td>
<td>Sets or returns the comparison mode for comparing keys in a Dictionary
object</td>
</tr>
<tr valign="top">
<td><a href="prop_count.asp">Count</a></td>
<td>Returns the number of key/item pairs in a Dictionary object</td>
</tr>
<tr>
<td valign="top"><a href="prop_item.asp">Item</a></td>
<td valign="top">Sets or returns the value of an item in a Dictionary object</td>
</tr>
<tr>
<td valign="top"><a href="prop_key.asp">Key</a></td>
<td valign="top">Sets a new key value for an existing key value in a
Dictionary object</td>
</tr>
</table>
<h3>Methods</h3>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr valign="top">
<th width="22%" align="left">Method</th>
<th width="78%" align="left">Description</th>
</tr>
<tr valign="top">
<td><a href="met_add.asp">Add</a></td>
<td>Adds a new key/item pair to a Dictionary object</td>
</tr>
<tr valign="top">
<td><a href="met_exists.asp">Exists</a></td>
<td>Returns a Boolean value that indicates whether a specified key exists in
the Dictionary object</td>
</tr>
<tr>
<td valign="top"><a href="met_items.asp">Items</a></td>
<td valign="top">Returns an array of all the items in a Dictionary
object</td>
</tr>
<tr>
<td valign="top"><a href="met_keys.asp">Keys</a></td>
<td valign="top">Returns an array of all the keys in a Dictionary
object</td>
</tr>
<tr>
<td valign="top"><a href="met_remove.asp">Remove</a></td>
<td valign="top">Removes one specified key/item pair from the Dictionary
object</td>
</tr>
<tr>
<td valign="top"><a href="met_removeall.asp">RemoveAll</a></td>
<td valign="top">Removes all the key/item pairs in the Dictionary object</td>
</tr>
</table>
<br />
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