As a follow up question to this one I asked yesterday, are there any good resources for finding the expected, worst case, or best case runtimes of the various c# builtin methods?
Again, I am not looking for a search engine. When developing software, an API is useful, but it seems that that API should also include a runtime promise.
When I need to get an idea of what is going on, I often use Reflector. Even though it does not provide any timings as such, reading the code will give you an idea of its performance.