When bulking do you still eat carbohydrates at night?

Typically yes, the only exception is if you are recovering from a workout and your body needs the energy to repair the damage you impose on your muscles. But if you are trying to add bulk you are going to ultimately have to add some fat otherwise your body may not want to increase in size.

I agree with Josh that especially if your trying to gain, you need to take a good whack of carbs after training. and also that to gain, you are going to have to accept that you will gain some fat along with the muscle. I think the answer to your question.

Ultimately, this decision will come down to your metabolism. If you aren't gaining, despite eating lots of protein, calories, carbs, healthy fats, etc and you are supplementing appropriately, then you will have to add evening carbs. Often young guys who are of a lean build and/or are quite active have to consume calories at every opportunity to make good gains!

So keep an eye on the scales and the mirror and adjust your carb intake and when you take them accordingly.