VB.NET - adding data in listview control VB net

I want to add data in a listview column serially progmatically and also the adding the subitems in vb.net.I want a sample code

want to create tool tip text as well as help file which will activate only when the user will press F1 key in vb.net windows application.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemwindowsformslistviewlistviewitemcollectionclassaddtopic.asp