DropdownList visible rows

ASP.NET newbiew here so please forgive the ignorance - I ahve searched and searched for an answer to this and I cant seem to find it so - time to post:

Q: In ASP classic I could limit the number of visible rows in a droplist (i.e. the height of the window when the dropdown list is clicked open) but for some reason I cannot figure out how to accomplish this same task in an asp.net dropdownlist?!?!?

I have a dropdown list that has over 1500 items in it - when you click open the list it streches down the entrie page! not a very clean look IMO!

If anyone could help a newb out with a point in the right direction I would appreciate it!

thanks!

Kev