The phrase "at the preview of" is correct and usable in written English.
It can be used when referring to an event or occasion where something is shown or presented before its official release or launch.
Example: "I had the opportunity to attend the preview of the new film last night."
Alternatives: "during the screening of" or "at the showing of".
Mr. Mattis said that at the preview of the sale he tested it with a black light and found optical brighteners.
And when I looked at the preview of the photo on my phone, I knew I would regret this mistake for ever.
"I am happy about this show, especially since I have never had a retrospective show in China," Mr. Yue said, speaking through a Chinese interpreter for an interview in Paris at the preview of the Fondation Cartier exhibition.
An artist we know reports that at the preview of the Guggenheim Museum, he spotted Alexander Calder trying to adjust a twisted string on a mobile of his on exhibit.
At the preview of the Allen house, Heide Banks sampled the cocktails and slow-cooked pork at the outdoor buffet and talked about her experiences as an owner of one of the Houses at Sagaponac.
At the preview of the Ansel Adams: Celebration of Genius exhibition at Edinburgh's City Art Centre, I overheard several visitors speculate as to whether the odd print here and there might not be missed.
Well, at least the preview of next week showed Shambles, the self-proclaimed Miss Popularity, growing ever more alienated (look it up, Shambles) from her own tribe.
Meanwhile the host can look at the previews of anyone asking to call in, and select who to bring on stage with them for simultaneous, sync'd up video streaming to the audience.
"The verb is 'to butle.' " Coincidentally, we ran into Mr. Leonard at the gala preview of the New York International Auto Show at the Jacob Javits Center the next night.
The song was also played at the preview screening of the band's concert film U2 3D at the 2007 Cannes Film Festival.
This week, at the press preview of the New York International Automobile Show, Ford executives will release the first pictures of the Futura, a midsize car aimed at the perennial champions of the car market, the Honda Accord and the Toyota Camry.
