Active Server Pages by Munishwar Gulati & Mini Gulati
Author:Munishwar Gulati & Mini Gulati [Gulati, Munishwar]
Language: eng
Format: epub, pdf
Published: 2016-12-01T08:00:00+00:00
Chapter 6 : Active Server Pages
4 5
UserName “Bill Gates”
<FORM METHOD= “Post” Action = “/nextpage.asp”>
<INPUT TYPE = “HIDDEN”= “UserName” VALUE=”<%=UserName
%>”>
<INPUT TYPE= “SUBMIT” VALUE= “Next Page”>
</FORM>
</BODY>
</HTML>
This page includes an HTML form. The form has a hidden field named
UserName that contains the value of the UserName variable. The form
also contains one button. When the button is clicked, the page
nextpage.asp is loaded and the data in the hidden form field is passed
the new page.
You can continue to pass data from page to page in this way
indefinitely. On each page, you must use the Form collection of the
Request object to retrieve the data in the hidden field. Next, you must
create a new hidden field so the data can be passed to a new page
again. Here’s an example:
<HTML>
<HEAD><TITLE>Next Page</TITLE></HEAD>
<BODY>
<%
UserName = Request.Form (“UserName”)
%>
<FORM METHOD = ”Post” Action= ” /nextpage.asp”>
<INPUT NAME= “UserName” TYPE= “HIDDEN” VALUE= ”
<% = UserName %>
%>
<INPUT TYPE= “SUBMIT” VALUE= “Next Page”>
</FORM>
</BODY>
</HTML>
Microsoft wants you to think of Active Server Pages in traditional
programming terms. When you create a single Active Server Page.
you’re creating something like a procedure or subroutine. When you
create a group of related Active Server Pages, you’re creating an
application.
However, an application is something more than a group of pages
sitting on a hard drive. When Active Server Pages are joined together
in an application, they have certain properties that they would
otherwise lack. Following is a list of some features of an Active Server
Pages application.
4 6
Chapter 6 : Active Server Pages
Data can be shared among the pages in an application, and
therefore among more than one user of a Web site.
An application has events that can trigger special application
scripts.
An instance of an object can be shared among all the pages in
an application.
Separate applications can be configured with the Internet
Service manager to have different properties.
Separate applications can be isolated to execute in their own
memory space. This means that if one application crashes.
the other won’t crash.
You can stop one application (unloading all of its components
from memory) without affecting other applications.
A Web site can have more than one application. Typically, you create
separate applications when you have collections of pages related to
separated tasks. For example, you might create one application
containing all the pages meant for public consumption. You might
create another application that’s restricted to use by Web site
administrators.
An application is defined by using the Internet Service Manager to
specify a root directory for the application. An application consists of
a particular directory and all of its subdirectories. If one of these
subdirectories is also defined to be an application, then it constitutes
a separate application. In other words, no two applications overlap.
Follow these steps to define an Active Server Pages application
1.
Launch the Internet Service manager from the Microsoft
Internet Information Server program group.
2.
Click the name of your default Web site in the navigation tree;
(If you haven’t changed anything, it will be named Default
Web Site).
3.
You can select existing directory, the default Web site, or
create a new directory for your application. To create a new
virtual directory, right-click the name of your default Web site
and then choose New | Virtual Directory.
4.
After you have chosen a directory for your application, you
need to view its property sheet.
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