ASP.NET技巧：GridView控件自定义分页详解

在这里我们将用一个隐藏字段来保存这个PageIndex,即当前页码.当点击上一页时,将它的值减一,知道为0,要注意的一点这里的第一页页码是0而不是1.下面看看代码,然后我们再分析分析!
1<asp:GridView ID="NewsGrid" runat="server" AllowPaging="false" Width="100%">
2          <Columns>
3             <asp:BoundField DataField="NewsId" HeaderText="新闻ID"/>
4             <asp:HyperLinkField DataNavigateUrlFields="NewsId" DataNavigateUrlFormatString="~/Details.aspx?ID={0}"
5                DataTextField="Title" HeaderText="新闻标题" ItemStyle-Width="70%"/>
6             <asp:BoundField DataField="PostTime" HeaderText="发布时间"/>
7             <asp:CommandField HeaderText="新闻管理" ShowCancelButton="False" ShowDeleteButton="True"
8                ShowEditButton="True"/>
9          </Columns>
10    </asp:GridView>
11    <div style=" height:16px; padding-top:5px; margin-right:30px; float:right">
12    <asp:HiddenField ID="CurrentPage" runat="server" Value="0"/>
13    <asp:LinkButton ID="First" runat="server" CommandArgument="first" onclick="PagerButton_Click">首页</asp:LinkButton>
14    <asp:LinkButton ID="Prev" runat="server" CommandArgument="prev" onclick="PagerButton_Click">上一页</asp:LinkButton>
15    <asp:LinkButton ID="Next" runat="server" CommandArgument="next" onclick="PagerButton_Click">下一页</asp:LinkButton>
16    <asp:LinkButton ID="Last" runat="server" CommandArgument="last" onclick="PagerButton_Click">尾页</asp:LinkButton>
17    </div> CS文件中的代码:
1    protected void PagerButton_Click(object sender, EventArgs e)
2    {
3          int pageIndx = Convert.ToInt32(CurrentPage.Value);
4          int totals = NewsManager.GetNews(0, pageSize).TotalRecords;
5          int pages = (totals % pageSize) == 0 ? (totals / pageSize) : (totals / pageSize + 1);
6          string arg = ((LinkButton)sender).CommandArgument.ToString().ToLower();
7          switch (arg)
8          {
9             case "prev":
10                if (pageIndx > 0)
11                {
12                      pageIndx -= 1;
13                }
14                break;
15             case "next":
16                if (pageIndx < pages - 1)
17                {
18                      pageIndx += 1;
19                }
20                break;