ASP.NET: Why ALWAYS use 2 RequiredFieldValidator controls when validating 2 behaviors?
<p>I always wonder why to check (i)if a field is not empty and also (ii)if the user submitted the initial value presented to him, we always need 2 RequiredFieldValidators.</p>

<p>Is there any reason they made it that way? Why not just adding a <strong>bool</strong> property such as "<strong>NullOrEmptyAllowed</strong>", for instance?</p>

<p>Thanks for helping.</p>
