searching profile.firstname

Hi,
I am trying to think of ways to seach the asp profile set up using profile.firstname and profile.lastname, which are defined within profile.
Would it take too long if i:
searched each user name, then extracted the profile.firstname and profile.lastname from it, then compared them against the search input, show them if match and dont show if dont match?
I think this would work, but would it take too long searching and making a new profile common for each one?
if this wont work, is there another way to do it?

Thanks

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