http://www.dotnetcurry.com/ShowArticle.aspx?ID=339
http://www.codeproject.com/Articles/16238/GridView-Custom-Paging
http://www.codeproject.com/Articles/25835/GridView-Custom-Paging-with-PageSize-Change-Dropdo
http://www.aghausman.net/dotnet/custom-paging-in-grid-view-2.html
http://www.dotnetcurry.com/ShowArticle.aspx?ID=339
http://www.codeguru.com/csharp/.net/net_asp/controls/article.php/c15145
how to customized paging here.
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