The Dark Knight....?

Did Harvey Dent/Two Face die in the dark knight? There was the funeral at the end for Harvey but doesn't Batman not kill people? and I also read that Two Face ends up going to some asylum with The Joker in other answers. Also, you know when Bruce gets a fingerprint off the bullet? How does that work? I... show more Did Harvey Dent/Two Face die in the dark knight? There was the funeral at the end for Harvey but doesn't Batman not kill people? and I also read that Two Face ends up going to some asylum with The Joker in other answers.
Also, you know when Bruce gets a fingerprint off the bullet? How does that work? I didn't really get that.
Thanks.
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