GridView自定義分頁

第一步：設置GridView的AllowPaging="True" 和 PageSize="20"
第二步：創建GridView的分頁模板

<PagerTemplate>
                第<asp:Label ID="LabelCurrentPage" runat="server" Text="<%# ((GridView)Container.NamingContainer).PageIndex + 1 %>"></asp:Label>
                頁/共<asp:Label ID="LabelPageCount" runat="server" Text="<%# ((GridView)Container.NamingContainer).PageCount %>"></asp:Label>頁
                <asp:LinkButton ID="LinkButtonFirstPage" runat="server" CommandArgument="First" CommandName="Page"
                    Visible='<%#((GridView)Container.NamingContainer).PageIndex != 0 %>'>首頁</asp:LinkButton>
                <asp:LinkButton ID="LinkButtonPreviousPage" runat="server" CommandArgument="Prev"
                    CommandName="Page" Visible='<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>'>上一頁</asp:LinkButton>
                <asp:LinkButton ID="LinkButtonNextPage" runat="server" CommandArgument="Next" CommandName="Page"
                    Visible='<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>'>下一頁</asp:LinkButton>
                <asp:LinkButton ID="LinkButtonLastPage" runat="server" CommandArgument="Last" CommandName="Page"
                    Visible='<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>'>尾頁</asp:LinkButton>
                轉到第
                <asp:TextBox ID="txtNewPageIndex" runat="server" Width="25px" BorderColor="gray"  BorderWidth="1px" Height="15" Text='<%# ((GridView)Container.Parent.Parent).PageIndex + 1 %>' />頁
                <asp:LinkButton ID="btnGo" runat="server" CausesValidation="False" CommandArgument="-2"
                    CommandName="Page" Text="GO" />
            </PagerTemplate>

第三步：在PageIndexChanging事件中添加如下代碼

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        // 得到該控件
        GridView theGrid = sender as GridView;
        int newPageIndex = 0;
        if (e.NewPageIndex == -3)
        {
            //點擊了Go按鈕
            TextBox txtNewPageIndex = null;
            //GridView較DataGrid提供了更多的API，獲取分頁塊可以使用BottomPagerRow 或者TopPagerRow，當然還增加了HeaderRow和FooterRow
            GridViewRow pagerRow = theGrid.BottomPagerRow;
            if (pagerRow != null)
            {
                //得到text控件
                txtNewPageIndex = pagerRow.FindControl("txtNewPageIndex") as TextBox;
            }
            if (txtNewPageIndex != null)
            {
                //得到索引
                newPageIndex = int.Parse(txtNewPageIndex.Text) - 1;
            }
        }
        else
        {
            //點擊了其他的按鈕
            newPageIndex = e.NewPageIndex;
        }
        //防止新索引溢出
        newPageIndex = newPageIndex < 0 ? 0 : newPageIndex;
        newPageIndex = newPageIndex >= theGrid.PageCount ? theGrid.PageCount - 1 : newPageIndex;
        //得到新的值
        theGrid.PageIndex = newPageIndex;
        //重新綁定數據
        this.prBindToDataGird();
              
  }