If you will want to pass information between pages without the user seeing it. Hidden form controls remain part of any form, but the user cannot see them in the Web browser. They should not be used for any sensitive information you do not want the user to see because the user could see this data if she looked in the source of the page.
A hidden control is used to attached data and process it with a form that cannot be seen or
changed by the user. As many hidden fields can be used as needed. <input> tag is using with value of the ‘type’ attributes set to ‘hidden’.
It is used to pass information from one web page to the other and the user should not see them. Sensitive information should not be stored in them as they are visible in the source of the page.
Its usage is shown
<input type=”hidden” name=”PageNumber” value=”3″ />
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