ASP.NET PagedDataSource Paging Property Diffrence

What is the difference between

(1) AllowServerPaging
开发者_JAVA百科(2) AllowCustomPaging
(3) AllowPaging

of PagedDataSource ? please explain the situation to pick up the appropriate one.

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allow custom paging:

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.pageddatasource.allowcustompaging.aspx

allow server paging:

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.pageddatasource.allowserverpaging.aspx

allow paging:

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.pageddatasource.allowpaging.aspx