I cancelled gparted operation ,what to do next?

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http://askubuntu.com – I cancelled gparted operation by mistake .Now one of the partition became corrupted ,what to next? Should I format it? Data is important to me ;( Edit1: I tried to recover partition using testdisk and successfully recoverd losted partition ,but another partition(an extended partition containing ubuntus ) gone ,How to recover it? :) Edit2: testdisk saved my life ,it recovered all my partition without losing data , (HowTos)