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// possibly shows a dialog box (but user can also set CurrentCell.ErrorMessage)
IsValid = Grid.RaiseCurrentCellValidating() && cellRenderer.RaiseValidate();
if (IsValid)
{
cellRenderer.RaiseValidated();
Grid.RaiseCurrentCellValidated();
}
By the time CurrentCellValidating the renderer seems to be gone because the current cell was deactivated.
We''ll add a null reference check to avoid this being a problem in our code for future builds.
But, what you can do for now is simply call CurrentCell.Deactivate() before you call RemoveRange. That way there is no current cell to start with and above Validate code will not get hit at all during the RemoveRange operation.
Stefan