Hi Surti,
We tried to reproduce this in V4.x by just implement KeyDown event in a GridControl, but could not get this issue. Maybe I am not following the steps that you are doing. Attached sample working fine here. Can you post a small sample showing this problem or tell us how to see it in the Browser sample/Attached sample?
Here is a sample for implementing it.
GC_KeyDownevent.zipIf you can provide more information, we can try to suggest some solution.
Regards,
Haneef