You can use any Pokéball to catch Virizion, but I would suggest either a Quickball or Timerball.
Use the Quickball first, since the quickball works best right at the start of a battle. If that doesn't work, take a long time draining it's HP and using Status moves like Harden, Sing, or Bulk Up, and then use a Timerball, since it works best after a long amount of time.
you use a pokeball
Throw a pokeball at it.
Any
A pokeball that catch's any Pokemon (never misses) and can catch and hold multiple Pokemon found in Black and white.
With a pokeball...
the strongest pokeball is the masterball. the masterball can catch any Pokemon out of the 493. it doesnt matter what kind of Pokemon it is, the masterball can catch any Pokemon.
by throwing a pokeball at them
with a pokeball...
with a pokeball ;)
with a pokeball
With a pokeball
You catch it in a reagular pokeball, dirtbag.