Auto Scrolling C# List Box

source from this article http://www.java2s.com/Code/CSharp/GUI-Windows-Form/SetTopIndextoautoscrollListBox.htm

the key code:

eventLogList.Items.Add(data);

int itemsPerPage = (int)(eventLogList.Height / eventLogList.ItemHeight);

eventLogList.TopIndex = eventLogList.Items.Count - itemsPerPage;