How do I control and update my web pages in ASP.NET using some sor

Background:
Ive been developing a few web pages using both ASP and Code behind techniques.
So many changes have been made to these pages that it has become a very tedious task in modifying my code.
What I'd like to achieve is to be able to run a patch or something similar to this to my web pages using versioning or version control.
I am familiar with Visual Source Safe but this is not the method I'd like to use.

Any help would be appreciated.