How slow is Reflection

Question

I recently created an interface layer to distinguish the DataAccessProvider from our Business logic layer. With this approach we can change our choice of DataAccessProvider

Answer 1

Reflection is not THAT slow. Invoking a method by reflection is about 3 times slower than the normal way. That is no problem if you do this just once or in non-critical situations. If you use it 10'000 times in a time-critical method, I would consider to change the implementation.