I used your solution for adding a checkbox in grouprows of a grid for UI Winforms:
Only specific grouprows need a checkbox, not all grouprows, which I handle in the CreateCell event. So far so good, seems to work perfect.
But.... when I start scrolling in the grid, because not all grouprows are visible in one screen, and the grouprows that have a checkbox leave the screen because of scrolling down, and then scrolling up again, the checkbox in the grouprow is gone, and grouprows that did not have the checkbox have now a checkbox?
Strange, I cannot figure out what is going wrong.
Hopefully I succeeded in describing the situation clearly.
Help would be appreciated.