Checkbox user selection validation question
<p>I have a checkbox, the business rule is it has to be selected by user manually (so that he is aware what he is doing, not check automatically by the program).</p>

<p>If the user didn't check it, we need to show an error msg. How should apply the validation by ASP.NET? RequiredFieldValidator or something?</p>

<p>Thanks,</p>
