我写的PageDataSurce分页的

PageDataSurce分页因为Http无状态的特性，所以无法保存pagedatasource状态值，所以每次请求都必须重新来指定CurrentPage的值...

一般是用QueryString来传递当前页的值。。。

我这个没用这种方法，我的方法是把PageDataSource保存在Cache中，所以就一直保存了它的装态。不需要再用QueryString传递了....

 1 <% @ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default"  %>
 2
 3 <! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
 4
 5 < html  xmlns ="http://www.w3.org/1999/xhtml" >
 6 < head  runat ="server" >
 7      < title > 无标题页 </ title >
 8 </ head >
 9 < body >
10      < form  id ="form1"  runat ="server" >
11      < div >
12        < table >
13          < asp:Repeater  ID ="Repeater1"  runat ="server" >
14              < ItemTemplate >
15
16                      < tr >
17                          < td > <% #DataBinder.Eval(Container.DataItem,"Name") %> </ td >
18                          < td > <% #DataBinder.Eval(Container.DataItem,"Tel") %> </ td >
19                          < td > <% #DataBinder.Eval(Container.DataItem,"Description") %> </ td >
20                      </ tr >
21              </ ItemTemplate >
22          </ asp:Repeater >
23         </ table >
24          < asp:Button  ID ="Button1"  runat ="server"  CommandArgument ="1"  CommandName ="Btn"  OnClick ="Btn_OnClick"  Text ="首页"   />
25          < asp:Button  ID ="Button2"  runat ="server"  CommandArgument ="2"  CommandName ="Btn"  OnClick ="Btn_OnClick"  Text ="上一页"   />
26          < asp:Button  ID ="Button3"  runat ="server"  CommandArgument ="3"  CommandName ="Btn"  OnClick ="Btn_OnClick"  Text ="下一页"   />
27          < asp:Button  ID ="Button4"  runat ="server"  CommandArgument ="4"  CommandName ="Btn"  OnClick ="Btn_OnClick"  Text ="末页"   />
28      </ div >
29      </ form >
30 </ body >
31 </ html >
32

后台代码：

using  System;
using  System.Configuration;
using  System.Data;
using  System.Linq;
using  System.Web;
using  System.Web.Security;
using  System.Web.UI;
using  System.Web.UI.HtmlControls;
using  System.Web.UI.WebControls;
using  System.Web.UI.WebControls.WebParts;
using  System.Xml.Linq;
using  System.Data.SqlClient;

public   partial   class  _Default : System.Web.UI.Page 
{
    private PagedDataSource pd;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("ID", Type.GetType("System.String"));
            dt.Columns.Add("Name", Type.GetType("System.String"));
            dt.Columns.Add("Tel", Type.GetType("System.String"));
            dt.Columns.Add("Description", Type.GetType("System.String"));
            dt.Rows.Add("1", "ddd", "123456", "个人人人人");
            dt.Rows.Add("2", "ddd", "56565656", "提供方多个");
            dt.Rows.Add("3", "qqq", "565656", "大师父是非得失");
            dt.Rows.Add("4", "www", "788888", "上的发生地方上的");
            dt.Rows.Add("5", "qas", "33333", "双方上的发生");
            dt.Rows.Add("6", "fff", "222222", "但是发的十分上的");
            dt.Rows.Add("7", "ccc", "33333", "双方都是非");
            InitalDataSourece(dt);
        }
    }

    private void InitalDataSourece(DataTable dt)
    {
        pd = new PagedDataSource();
        pd.DataSource = dt.DefaultView ;
        pd.PageSize = 2;
        pd.AllowPaging = true;
        Cache["Pd"] = pd;
        DataBind();
    }

    private void DataBind()
    {
        Repeater1.DataSource = pd;
        Repeater1.DataBind();
    }

    protected void Btn_OnClick(object sender, EventArgs e)
    {
        Button btn = (Button)sender;
        pd = (PagedDataSource)Cache["Pd"];
        if (btn.CommandArgument == "1")
        {
            pd.CurrentPageIndex = 0;
        }
        else if (btn.CommandArgument == "2")
        {
            if (pd.IsFirstPage)
            {
                pd.CurrentPageIndex = 0;
            }
            else
            {
                pd.CurrentPageIndex -= 1;
            };
        }
        else if (btn.CommandArgument == "3")
        {
            if (pd.IsLastPage)
            {
                pd.CurrentPageIndex = pd.PageCount - 1;
            }
            else
            {
                pd.CurrentPageIndex += 1;
            }
        }
        else
        {
            pd.CurrentPageIndex = pd.PageCount - 1;
        }
        DataBind();
    }

}