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Overview of IIS Application Architecture
Some of the new elements that you will get to know when programming a VB IIS
application include the following:
WebClass objects. WebClass objects are enhanced Class objects
that you create with the WebClass Designer in an IIS application. Each WebClass
object provides a Web page to its client. The Web page provided by the WebClass
is based on an associated HTML template (see the following item). You program
the WebClass object to dynamically create the Web page from the HTML template
based on its own internal logical decisions and on information sent back from
the end user.
You can also create HTML programmatically to be sent to the browser by using the
Write method of the WebClass’ Response object.
HTML templates. An HTML template, as just mentioned, is the
basis for the Web page that a WebClass dynamically creates. You create an HTML
template as a normal HTML page using an HTML editor or text editor.
WebItems. A WebItem is an IIS application object that provides
one or more custom events for a WebClass.
ASP host page. An ASP host page provides an instantiated WebClass
object to the server. Users must point their browsers to the ASP host page’s
URL to use the associated WebClass.
The host page’s only job is to call CreateObject to instantiate your WebClass
object. You do not have to create the IIS application’s ASP host pages,
because VB automatically creates a host page for each WebClass when you run or
compile your IIS project.
The following sections discuss the use of these elements.
- Creating and Programming a WebClass
- Sending HTML Text Directly to the Client
- Programming With an HTML Template
- Substitution Tags
- Creating and Programming Custom WebItems
- Custom Events for WebItems
- Dynamic Events for WebItems
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