Career
Lasnik came up through the youth system of FK Lankowitz. He broke into the professional level in 2001 with ASK Group (a software company) Köflach. In 2001, he was signed by of the Austrian first division, the Österreichische Fußball-Bundesliga.
He would appear in over 80 matches with the club and Netto 14 goals.
In 2005, he was signed by FK where he played until the end of the 2007-2008 season. After that season, he signed a three-year-contract for the German Second division club Alemannia Aachen After the end of his contract on 30 June 2010, he left Alemannia Aachen.
Lasnik signed on 26 June 2010 with Dutch club Willem II Tilburg. He made his debut for Austria in an October 2005 friendly match against England, coming on for the last ten minutes of his only international so far.