ASP.net server side ListBox controls - get value when a control is disabled
<p>In our project we use ASP.net server-side controls (not my idea).<br>
We have some client-side code that might disable some of those controls.<br>
However, I'm unable to retrieve the <code>SelectedValue</code> of listboxes which have been disabled:  </p>

<p>If <code>ListboxA</code> is disabled on the client side, then on postback,  <code>ListboxA.SelectedValue</code> is empty (even though there <em>is</em> a selected value). if the listbox is not disabled- the selected value is returned correctly.<br>
I found a workaround for this by simply enabling all the controls before postback, but that's... kinda stupid. anybody got a better idea?</p>

<p><em>P.S:</em> example scenario: if a user chooses 'administrator' in the 'user type' listbox, the 'permissions' listbox has the value 'all' set, and becomes disabled, so that administrator can only be created with all permissions.</p>
