如何在运行时从代码隐藏中更改CSS键的值？

I have a fairly simple page which queries a web service to pull data from a SQL server, returning a generic list of varying size. What I'm trying to do, is adjust the height of the div at runtime, adding a certain number of pixels to an existing CSS key on each iteration of a foreach loop, so that the projected list does not overflow the container div.I have a fairly simple page which queries a web