In C#, how do I keep certain method calls out of the codebase entirely?

Question

I\'m trying to get rid of all DateTime.Now method calls and replace them with my own GetNow() method, which may sometimes return a fixed date for t

Answer 1

There's no real way to enforce something like this.

The closest you're going to come is making a custom FxCop rule or custom Visual Studio Code Analysis rule to error/warn on calls to DateTime.Now.