I blogged a while ago about how I'm not comfortable with using a base class that all of your pages inherit from in ASP.Net. In .net 1.x this was really the only way to enforce behaviour and share functionality but it meant all of the developers on the team had to remember to do it, and it was a manual task. There are ways around this, like overriding the default templates in Visual Studio . Of course, you can still choose to use a base page class in ASP.Net 3.5, one that inherits from System...