You cannot become a vampire for two very good reasons.
1) Vampires are fictional creatures based on medieval misunderstandings of the natural processes of death. They were made popular by Anne Rice and the game Vampire, the Masquerade. And of course they became all the rage after the Twilight books and movies came out. But they are creations of Hollywood and fiction, not real life.
2) Even if vampires were real magic could not make you into one. Magic cannot and will not change your DNA to anything other than the human DNA you were born with. Magic is far more subtle than that and isn't going to change your physical self into anything else.