Intro to the ASP Object Model
A brief overview of the ASP object model. I will be submitting more tutorials on each object in future submissions.
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<p><font face="Verdana">Alright we have now written a very simple ASP
page, but lets take some time and explore some of the built in features of
ASP. The first thing that we should take a look at are the five intrinsic
objects that are part of the ASP Scripting Context (an important note is
that there is a sixth object which will be covered later). The diagram
below shows the five main objects. They are the Request, Response,
Application, Session, and Server. </font><center><map name="FPMap0">
<area coords="105,39,198,64" href="http://www.planet-source-code.com/vb/tutorial/asp/default.asp?ID=8" shape="RECT">
<area coords="106,73,195,95" href="http://www.planet-source-code.com/vb/tutorial/asp/default.asp?ID=9" shape="RECT">
<area coords="106,103,199,127" href="http://www.planet-source-code.com/vb/tutorial/asp/default.asp?id=10" shape="RECT">
<area coords="106,138,199,162" href="http://www.planet-source-code.com/vb/tutorial/asp/default.asp?ID=11" shape="RECT"></map><font face="Verdana"><img border="0" height="200" src="http://www.planet-source-code.com/vb/tutorial/asp/images/object.gif" useMap="#FPMap0" width="200"></font>
<p> </p>
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<p><font face="Verdana">Each of these objects has there its own methods
and properties that the following sections are going to cover. To give a
rough outline.</font>
<ul>
<li><font face="Verdana"><b>Request:</b> This object exposes the
properties of the HTTP request. A request is what is sent to the
server when the browser asks for a particular action. For instance
typing <a href="http://www.4aspdev.com/contact.asp">http://www.4aspdev.com/contact.asp</a>
is a request to the 4aspdev server for the contact.asp page. There is
a lot more to it than that, but for now let's leave it at that.<br>
</font>
<li><font face="Verdana"><b>Response:</b> The response object exposes
the properties of the server response. The response is what the server
sends to the browser after a request is made. The response object
allows you to:</font>
<ul>
<li><font face="Verdana">Control what data is sent in the header of
the HTTP response (don't worry if you don't know what a header is
I will get to that later)</font>
<li><font face="Verdana">Control what data is sent to the client in
the <:body> of the HTTP response</font>
<li><font face="Verdana">Control when and how the data is sent</font></li>
</ul>
<br>
<li><font face="Verdana"><b>Application:</b> This object allow you to
manipulate the properties of the application. In ASP an application is
all the files in a virtual directory and its subdirectories.
Application scope covers all users of the web site so if you set an
application level variable or setting it will effect everyone that
uses the site.<br>
</font>
<li><font face="Verdana"><b>Session:</b> This object allows you to
control the properties on an individual user session. A session starts
when a user first comes to you site and ends either when they leave,
close their browser, or at a set timeout. Any variables or settings
that are made using the session object are on an individual basis.<br>
</font>
<li><font face="Verdana"><b>Server:</b> This object effects the Server
itself. This object allows you to control certain aspects of the
server such as script timeout. Which is the time that a script is
allowed to process.</font></li>
</ul>
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