protected override void DoProcessControlEvent(object sender, LibControlEventArgs e)
{
    base.DoProcessControlEvent(sender, e);
    if (this.IsEditMode)
    {
        LibEventType eventType = e.EventType;
        switch (eventType)
        {
            case LibEventType.BeforeAddNewRow:
                this.BeforeAddNewRow(e);
                return;
            default:
                return;
        }
    }
}