Hi,
Thank you for answer, but
The problem continues.
You can see your demo on CompanionKit,
DataGridView \ Populating Data \ Insert / Update / Delete section;
First of all, go to the last line on datagridview,
- edit mode, (left dbl click on the mouse)
- right click mouse and select (context menu -> Add Row ...)
- enter information via pop-up dialog, press the OK Button,
ultimately add to the table 2 entries, one of which must not be registered.
Regards