Course ASP.NET : forms and server controls
Course ASP.NET : forms and server controls
HTML Forms
Forms on a Web page are important
as they provide the means through which a user can enter data and send it to
the Web server. The method by which this is done is by using
ASP.NET forms are somewhat different from the HTML forms. Let’s look at the HTML forms.e
HTML Forms
A form is created by using the
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action
– specifies the script page that will process the form data,
................
·
method
– specifies the HTTP method by which form data is transmitted. Commonly there
are two methods of transmission: GET and POST.
The GET Method:
The GET method is the default, and is
normally used to retrieve files from the Web server. However, when it is used
in conjunction with
For example:
Here “&” separates the name-value
pairs and “=” separates the name and value.
The POST Method:
In this method, the form information
is sent to the Web server in the body of the HTTP Request rather than part of
the URL. However, this method is no better secured than the GET method. It
allows more information to be sent
In ASP.NET there is no choice of
method of transmission, POST is the only method used.
HTML Form Controls
The traditional HTML form supports several controls, and tag is the most common that is used to define text boxes, radio buttons, check boxes, buttons, submit button, reset button, password fields, and hidden fields.
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Input
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Creates form elements such as text and password boxes,
hidden fields, radio buttons, check boxes, submit and reset buttons, images,
and buttons
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Select
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Creates elements such as a drop-down list and a list
box
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Textarea
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