listview分页

<asp:DataPager ID="dpActivity" runat="server" PagedControlID="lvclass" PageSize="30">
                <Fields>
                    <asp:NextPreviousPagerField ButtonType=Link ShowFirstPageButton="True" ShowNextPageButton="False"
                        ShowPreviousPageButton="False" />
                    <asp:NumericPagerField />
                    <asp:NextPreviousPagerField ButtonType=Link ShowLastPageButton="True" ShowNextPageButton="False"
                        ShowPreviousPageButton="False" />
                </Fields>
            </asp:DataPager>