Hi.
I do not think you'll need the sample code.
This is because if you add the Grid but do not set anything and take the same action, it will stop.
This stops without getting any events.
This makes debugging impossible.
I know that you can get a trial version of a third-party product here.
Please note that the UserControl in the third-party product was created with the RadGridView of 'Telerik' and attached a screenshot of the problem.
The RadGridView will cause all columns to be read-only, select empty space, and stop at any key press.
The same error occurs when using other components as well as the 'Telerik' RadGridView.
Ex) RadTreeView, Label etc.
Other vendors' products (Infragistics, DevExpress, etc.) will work normally and will work correctly with the Winforms components that come standard with VS (Visual Studio).