when they're damp, put in a bit of gel or wax in them, then pin them to the side as they're drying (or you could blow dry, with or w/o brush). When dry, brush the bangs a little in that direction till the texture's where you want it and they're not too stiff. Add more gel or wax just to the ends, so the bangs don't get all piece-y on you (make the ends come together in sort of at triangle, if that make sense). Set with a light to medium hairspray.
Mine stay pretty well like this and I have really straight fine hair that hates to stay in any position. They may move around in the wind or when I toss my hair or something, but they'll settle back into that shape. If it gets messed up, wet your fingers and pinch the ends together again-- the extra product on the ends should save you in a crunch, and it doesn't look greasy since it's away from your scalp.