Patti Divelbiss, chairwoman of the library's capital campaign, said tickets for the event sold out almost two weeks ago.
"This evening is sort of like a taste of the town," she said.
The evening featured food sampling provided by 12 area restaurants and vendors, as well as wine tasting courtesy of Tuscarora Mt. Winery and more than $8,000 worth of donated silent auction items, Divelbiss said.
With a campaign goal of $1.2 million, Divelbiss said they made about $7,000 on ticket sales alone and hoped to raise at least $10,000 after all the silent auction items were tallied.
"I can't say enough about the community," Divelbiss said. "They have just embraced the library project and really are trying to help us make our goals."
Jessica Green of Greencastle, who came with her husband, brother, parents and friends, said she has two daughters that grew up attending numerous events at their local library and is glad to see an event like this come to the area for a great cause.
"Everybody's really excited about an event right here in Greencastle," she said. "It's nice because we don't have to go to Hagerstown or Chambersburg (Pa.) as much."
Divelbiss said funding for libraries is becoming scarcer, so the support coming from the local community allows them to continue offering a diverse range of services for all ages.
One vendor, Brian Evans of Trickling Springs Creamery in Chambersburg, said they agreed to offer free samples of their natural organic dairy treats at the event several weeks ago.
"But I was not aware that it would be this big," he said. "I'm impressed with the turnout. It's a very nice crowd."