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<h1>ASP <span class="color_h1">Application</span> Object</h1>
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<p class="intro">A group of ASP files that work together to perform some purpose is called an application.</p>
<hr>
<h2>Application Object</h2>
<p>An application on the Web may consist of several ASP files that work together to perform some purpose.
The Application object is used to tie these files together.</p>
<p>The Application object is used to store and access variables from any page, just like the Session object. The difference
is that ALL users share ONE Application object (with Sessions there is ONE Session object for EACH user).</p>
<p>The Application object holds information that will be used by many pages in the application (like database connection information).
The information can be accessed from any page. The information can also be changed in one place, and the changes will automatically be reflected
on all pages.</p>
<hr>
<h2>Store and Retrieve Application Variables</h2>
<p>Application variables can be accessed and changed by any page in an application.</p>
<p>You can create Application variables in "Global.asa" like this:</p>
<div class="w3-code w3-border notranslate"><div>
<script language="vbscript" runat="server"><br><br>
Sub Application_OnStart<br>
application("vartime")=""<br>
application("users")=1<br>
End Sub<br><br>
</script></div></div>
<p>In the example above we have created two Application variables: "vartime" and "users".</p>
<p>You can access the value of an Application variable like this:</p>
<div class="w3-code w3-border notranslate"><div>
There are<br>
<%<br>
Response.Write(Application("users"))<br>
%><br>
active connections.</div></div>
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<h2>Loop Through the Contents Collection</h2>
<p>The Contents collection contains all application variables. You can loop through the Contents collection, to see what's stored in it:</p>
<div class="w3-code w3-border notranslate"><div>
<%<br>
dim i<br>
For Each i in Application.Contents<br>
Response.Write(i & "<br>")<br>
Next<br>
%></div></div>
<p>If you do not know the number of items in the Contents collection, you can use the Count property:</p>
<div class="w3-code w3-border notranslate"><div>
<%<br>
dim i<br>
dim j<br>
j=Application.Contents.Count<br>
For i=1 to j<br>
Response.Write(Application.Contents(i) & "<br>")<br>
Next<br>
%></div></div>
<hr>
<h2>Loop Through the StaticObjects Collection</h2>
<p>You can loop through the StaticObjects collection, to see the values of all objects stored in the Application object:</p>
<div class="w3-code w3-border notranslate"><div>
<%<br>
dim i<br>
For Each i in Application.StaticObjects<br>
Response.Write(i & "<br>")<br>
Next<br>
%></div></div>
<hr>
<h2>Lock and Unlock</h2>
<p>You can lock an application with the "Lock" method. When an
application is locked, the users cannot change the Application variables (other than the one currently accessing
it). You can unlock an application with the "Unlock" method. This method
removes the lock from the Application variable:</p>
<div class="w3-code w3-border notranslate"><div>
<%<br>
Application.Lock<br>
'do some application object operations<br>
Application.Unlock<br>
%></div></div>
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