I try to use DataGridView in a winform app. I added DataGridViewCheckBoxColumn
I'd like to set all checkbox default value as false.
I use the DefaultValuesNeeded event but not working.
Then I try to use a loop. It worked. But It's very slow.
It only changed 20-30 rows in 10 seconds. There are thousands rows in the datagridview.
So the performance is not acceptable. Please help. Appreciated!!
Please check code from attachment.