The background color of DataGridView looks incorrect after Alt+Tab, Alt+Tab

[zlf]

Hello,
I just implement a custom control that extends from DataGridView, every cell
has different background. I found a problem, for now it seems to be erasing
background incorrectly after selecting a cell, when switch to different
application(hit Alt+Tab) and then once more to back. The background of
selected cell will be consistently rendered to a color, rather than the
dynamically configured one. If I select another cell after switching, the
previously selected cell's background will be rendered to be correct color
then.

Thanks

 

[zlf]

Resolved. Execute ClearSelection() in CellSelection event will be ok.

 

[zlf]

It occurs again, not so frequently but indeed occurs sometime. It occurs
when I resize some columns too.
Plz help me, thx

zlf