There is a custom column in the grid with type checkbox. When AllowUpdate for the entire grid is set to No, none of the columns in the grid should be non-editable and it works fine. However, the checkbox column can be checked/unchecked using mouse (keyboard works fine). No events like CellUpdate or any After/Before events get fired when the checkbox is checked/unchecked.

This is happening in v8.2 as well as v9.1. However in the older version like 6.3, it is working fine. Is it an issue with the newer versions?

How can I prevent the check/uncheck of the checkbox when the entire grid is non-updateable? 

If anyone has a solution/workaround, please do reply ASAP.

Thanks