public override void DetachEditingControl()
{
System.Windows.Forms.DataGridView dataGridView = this.DataGridView;
if (dataGridView == null || dataGridView.EditingControl == null)
{
throw new InvalidOperationException("Cell is detached or its grid has no editing control.");
}
IntegerTextBox editBox = dataGridView.EditingControl as IntegerTextBox;
if (editBox != null)
{
editBox.ClearUndo(); // avoid interferences between the editing sessions
}
base.DetachEditingControl();
}
