[ASP.NET 3.5] [C#] ListView itself has the Paging capacity. Why need DataPager ?

 
ListView itself has the Paging  capacity. Why need DataPager ?
What is the relationship between this and IPageableItemContainer?

ms-help: / / MS.VSCC.v90/MS.MSDNQTR.v90.cht/fxref_system.web.ui.webcontrols/html/945e796f-6f2e-2b28-a23a-b177ae2b9d76.htm
I can not understand.

Is there a example including ListView, DataPager, IPageableItemContainer?
I could not find by google ? ( Or use Inappropriate keyword )

Thank you very much ^_^
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