Ed Woodcock Ed Woodcock - 3 months ago 28
HTML Question

Nesting optgroups in a dropdownlist/select

I have created a customer c# DropDownList control that can render out it's contents are optgroups (Not from scratch, I edited some code found on the internet, although I do understand exactly what it's doing), and it works fine.

However, I have now come across a situation where I need to have two levels of indentation in my dropdown, i.e.

<select>
<optgroup label="Level One">
<option> A.1 </option>
<optgroup label="Level Two">
<option> A.B.1 </option>
</optgroup>
<option> A.2 </option>
</optgroup>
</select>


However, as far as I'm aware this will just render like normal optgroups.

Is there a way to produce this nested behaviour?

Answer

Ok, if anyone ever reads this: the best option is to add four &nbsp;s at each extra level of indentation, it would seem!

so:

<select>
 <optgroup label="Level One">
  <option> A.1 </option>
  <optgroup label="&nbsp;&nbsp;&nbsp;&nbsp;Level Two">
   <option>&nbsp;&nbsp;&nbsp;&nbsp; A.B.1 </option>
  </optgroup>
  <option> A.2 </option>
 </optgroup>
</select>