Before you point me to your grid’s default functionality demo as if it is the end all, and be all of all possible CheckBox examples- I’d appreciate if you’d hear what the whole problem is.
Your two state checkbox it appears to me the checkbox also takes zeros and ones. I cannot tell if those zeros and ones need to be strings or numbers. If I copy and paste from your grid to excel and then back, Excel had converted the values from the grid to TRUE AND FALSE in capital letters. That seems to work too. So maybe it’s here in the website and have missed it – but EXACTLY are the acceptable values I should be when loading the database from an adapter? Are 0’s and 1 ok?