"while showcasing" is correct and usable in written English.
You can use it to describe an action that is occurring simultaneously with something else. For example: "The band performed their songs while showcasing their new album."
The organisation linked a social media campaign to print and digital efforts to both drive donations and awareness, all the while showcasing the grassroots efforts.
There's something inescapably shallow about the way traditional biopics traipse from childhood trauma to early career to alcohol- or drug-related setback to triumphant comeback, all the while showcasing a shameless example of is-it-real-or-is-it-Memorex grandstanding from Joaquin Phoenix or Reese Witherspoon or Jamie Foxx.
Land Rover did just that while showcasing the 2014 Range Rover Sport in Britain this month.
Its stairs enclose a sound system while showcasing an aquarium and a terrarium wittily built into the risers.
Mr. Delouvrier gave more emphasis to classical French themes, while showcasing the culinary traditions of southwest France.
We'll be revisiting some of the music, interviews and sessions from the 90s – Blur, Oasis and Radiohead – while showcasing bands and tracks we're excited about now".
While showcased here in a purely classical variation, and showing a fluidity that belies his 40 years, when he comes to Britain with the Boston Ballet next week he'll be dancing a much more contemporary repertory.
That seemed to be the mantra of designer Christophe Lemaire this season, as the Frenchman sent out a collection that, while showcased fewer looks than in past seasons, didn't sacrifice quality or creative wit.
The Ector County Coliseum in Odessa is host to the Permian Basin International Oil Show every other year, honoring the oil industry's past while also showcasing the latest technology.
Yet that's exactly what happens each year at the Palm Springs International Film Festival, which has become an essential stop for celebs working the awards circuit while also showcasing iforeign language cinema (including Oscar hopefuls).
The museum will focus on social history, highlighting the city's contribution to the world, while also showcasing popular culture.
