Hi Ae,
Thanks for being patience. This can be achieved by handling the QueryCellInfo and CurrentCellChanged events. In the QueryCellInfo event, the column2 checkbox is disabled or enabled depending on the value in the column1 checkbox and the CurrentCellChanged event is used to refresh the column2 checkbox as the column1 checkbox gets changed.
Please refer to the sample for more details
Thanks,
Megavannan
DisableCheck.zip