Hi Sameem,

The bound checkbox displays whatever data is bound to it.  By default, for a boolean or nullable boolean field, it displays true as checked, false as unchecked, and null as partial.  That's the only time it should show up- if you have null data.

If you do not like that behavior, you can assign the column a different ValueConverter.  This would be a class that implements IBooleanConverter.  You would make it so that null becomes checked or unchecked.

regards,
David Young