Asp code validating a form

However, in the example above, all input fields are optional.The script works fine even if the user does not enter any data.Hi I'm making a web page where the user can choose whether to search a database by either last name, customer number, data, order number or orders for shipping.The user chooses by clicking on a radio button corresponding to the choice they want, then they type in a textbox the required information, so if they chose last name, then they have to type a surname in the text box.If the REQUEST_METHOD is POST, then the form has been submitted - and it should be validated.

A form with method="get" How to interact with the user, with the Request. A form with method="post" How to interact with the user, with the Request. A form with radio buttons How to interact with the user, through radio buttons, with the Request. Information sent from a form with the GET method is visible to everyone (it will be displayed in the browser's address bar) and has limits on the amount of information to send. Form command is used to collect values in a form with method="post".

You should consider server validation if the user input will be inserted into a database.

A good way to validate a form on the server is to post the form to itself, instead of jumping to a different page.

The next step is to make input fields required and create error messages if needed.

Anthony Moore Microsoft Corporation July 2000 Updated March 2002 Summary: Provides a brief overview of the validation framework in ASP.

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