NotifyRowsAdded
void NotifyRowsAdded(int32 rowIndex, int32 count);
NotifyRowsAdded(fDispositions.CountItems() - 1, 1);
NotifyRowsAdded(countBefore, count - countBefore);
NotifyRowsAdded(countBefore, count - countBefore);
NotifyRowsAdded(0, fStackTrace->CountFrames());
NotifyRowsAdded(countBefore, count - countBefore);