Barnet completed a superb Easter programme by following up Saturday's win against leaders Hartlepool with a convincing victory over Rochdale.
Barnet were sharp and incisive going forward and good value for the lead they took into the break.
They went ahead with their first attack when Adam Birchall crossed for the unmarked Barry Cogan, who slotted in.
Cogan then turn provider, crossing for Dean Sinclair who finished Rochdale off with a diving header.
Rochdale: Gilks, Ramsden, Jackson, McArdle, Goodall, Muirhead (Reet 46), Doolan, Perkins, Rundle (Poole 69), Dodds (Dagnall 46), Murray.
Subs Not Used: Rigby, Flitcroft.
Booked: Perkins, Goodall.
Barnet: Harrison, Devera, Yakubu, King, Nicolau, Cogan, Bailey, Sinclair, Puncheon (Graham 90), Birchall, Hatch (Grazioli 87).
Subs Not Used: Flitney, Vieira, Allen.
Booked: Devera, Birchall.
Goals: Cogan 24, Sinclair 33.
Att: 2,525
Ref: M Haywood (West Yorkshire).