Using Variables, and Forms in Active Server
PagesForms are a convenient way to communicate with visitors to your
Web site. Using forms, you can create a survey form and ask visitors to fill it
out. When they fill out the form, you can process the results automatically.
With forms, there are two steps: first you create the form, and then you
process it. To create a form for an Active Server Page, just create a standard
HTML form.
To try out this example, create an HTML file ("form_response.html") and
cut-and-paste the following text into it.
| form_response.html |
<html>
<head><title>Asking for
information</title></head>
<body>
<form
method="post" action="form_response.asp">
Your name: <input
type="text" name="name" size="20"><BR>
Your email: <input type="password" name="email" size="15"><BR>
<input
type="Submit" value="Submit">
</form>
</body>
</html> |
Active Server Pages provide a mechanism for processing forms that, unlike CGI
scripting, doesn't involve serious programming: the Request.Form.
Considering the form above, we may create the file bellow and get a response.
| form_response.asp |
<html>
<head><title>Responding
to a form</title></head>
<body>
Your name is
<% =Request.Form("name") %> <BR>
Your email is <% =Request.Form("email") %>
</body>
</html> |
To display the contents of each field in the form, type: <% =Request.Form(fieldname) %> where
fieldname is the name of the field.
Creating a VariableYou'll probably want to do more with your forms than
display their contents in a Web page. For example, based on the contents of the
form, you may want to create a variable and insert that variable in different
places of your response page. You may need to create a variable. To do that,
just make up a name and set it equal to the contents of the field.
For example, if you have a field called "CatName" in your form, you can save
it into a variable called "TheName" by typing: <% TheName = Request.Form("CatName") %>If
you want to display "VisitorName" several times within a text you only need to
include the variable in the text. For example:
My catīs name is <% =TheName %>. Do you want to see <%
=TheName %>?.
ExampleThe form in this example asks users to introduce their names and
their favorite color: red, blue, or green. When the form is received, the server
responds displaying these data.
| nameandcolor.html |
<html>
<head><title>Name and Color</title></head>
<body>
<FORM ACTION="nameandcolor.asp" METHOD=POST>
Let me know your Name and Favorite Color:
<P>YOUR
NAME:
<INPUT TYPE="TEXT" NAME="YOURNAME" SIZE=20>
<P>COLOR:
<INPUT TYPE="RADIO" NAME="COLOR"
VALUE="1" CHECKED>Red
<INPUT TYPE="RADIO" NAME="COLOR" VALUE="2">Green
<INPUT TYPE="RADIO"
NAME="COLOR" VALUE="3">Blue
<P>
<INPUT TYPE="SUBMIT" VALUE="OK">
</FORM>
</body>
</html> |
Now, create an ASP file ("nameandcolor.asp") and cut-and-paste the following
text into it.
| nameandcolor.asp |
<html>
<head><title>Name and Color</title></head>
<body>
<% TheName = Request.Form("YOURNAME") %>
<%
colornumber = Request.Form("COLOR") %>
Hi,
<% =Thename %>.<BR>
I know your favorite color is
<% if colornumber = "1" then %>
red
<% end if %>
<% if colornumber = "2" then %>
green
<% end if %>
<% if colornumber = "3" then %>
blue
<% end if %>.
</body>
</html> |
|
