[GridView控件]自定义分页

 1 < asp:GridView  ID ="NewsGrid"  runat ="server"  AutoGenerateColumns ="False"  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 >

 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;
21                case "last":
22                    pageIndx = pages - 1;
23                    break;
24                default:
25                    pageIndx = 0;
26                    break;
27            }
28            CurrentPage.Value = pageIndx.ToString();
29            NewsGrid.DataSource = NewsManager.GetNews(pageIndx , pageSize).Entities;
30            NewsGrid.DataBind();
31        }