Does there exist a multiple select dropDownList for asp.net?

I'开发者_如何学JAVAd like to have a DropDownList that has a CheckBox next to each item that would allow multiple to be selected. I did a little poking around but haven't found anything that will do this, does anyone know if this can be easily achieved?

I know it can be done with a listBox, but would prefer the dropdown format to save space.

Have a look at the DropDown control from the ASP.NET AJAX toolkit: It allows you to put arbitrary controls into a dropdown-like interface. I didn't try it, but I think that it should work to put a CheckBoxList in there.

I've never seen a multi-select DropDownList on any platform. How do you want it to work?

I'm sure some clever javascript could create one.