DataGridView — Simultaneous input and output — Is this a bug in DataGridView?

Losing all uncommited changes. If you can intercept the event before the DataGridView refreshes the cells, you could save the uncommited changes away to restore them after the refresh. But that would be an ugly workaround... Did you ask on the MSDN forums?

Maybe someone from MS could give you a more useful answer.

I posted the same question on MSDN following your comment here. So far -- in over a week -- I've had no response. – Joe H Dec 28 '09 at 13:21.

The cell being edited doesn't appear to lose focus, however it is reset to it's previous value whenever the other column is updated (10 times per second in my example). It can be updated if you type a number and return VERY quickly. – Joe H Dec 21 '09 at 22:29.

I suspect that when a PropertyChanged event occurs, the DataGridView refreshes all cells, or perhaps only cells in the row that changed (does it happen when you're editing another row?), losing all uncommited changes.

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