The phrase "a file full of" is correct and usable in written English.
You can use it to describe a file that contains a large amount of information or data on a particular subject.
Example: "I found a file full of interesting research articles that could help with our project."
Alternatives: "a document packed with" or "a folder brimming with".
Admittedly, I don't have a file full of examples at hand.
I'd come with a file full of recipes and big shellfish ambitions, but once I was introduced to the Barksdales, McNulty, Omar, Bunk, the Baltimore waterfront and Hamsterdam, cooking seemed like a dismal waste of time.
But Kolia calls on the help of his old army buddy Dimitri (Vladimir Vdovichenkov), who is now a slick lawyer in Moscow, and he has arrived in this remote region with a file full of incriminating evidence on Vadim that he promises his old comrade will induce Vadim to back off.
'I'll be back later," Tab Turner told his secretary as he rushed out of his North Little Rock law office, a file full of damning documents under his arm, a cell phone in one hand, a cup of coffee in the other.
He demoed Drive on the iPad, searching through a file full of receipts in the search box.
He added that he had a file full of examples of companies considering relocating jobs overseas because they could no longer bring in key staff and that was "very damaging" to British business.
The differences between Iran and the western states seemed minute – in some cases just a single word - but attached to that word would be a whole file full of technical details that only experts could decipher.
He still has a thick file full of them: thrillers, romances, non-fiction, science fiction, young adult novels..
He also had a card file full of industry contacts.
Those who took the chance to get their archive got a compressed file full of data.
Over the next few months, Mr. Baker had us spend tedious hours amassing an accordion file full of photographs, specification sheets, building codes, timetables and other evidence to support our claim.
