I have done some looking and I found this:
http://www.codeproject.com/Articles/14439/The-ScrollableListBox-Custom-Control-for-ASP-NET-2
but to me it seems like there must be a simpler method.. with regular C# .NET you can just do
listbox1.HorizontalScrollbar = true;
and then your listbox comes up with one with no hassle, isn’t there some simple way to apply one to an asp listbox in the same fashion?
No>
HTML does not support that.