Repeater控件分页

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;public partial class _Default : System.Web.UI.Page 
{
    SqlConnection sqlconn;
    string sqlstr = "data source=localhost;database=shop;Uid=sa;Pwd=admin";
    public void Page_Load(Object src, EventArgs e)
    {
        this.bind();
    }
    public void bind()
    {
        int curpage = Convert.ToInt32(this.Label1.Text);
        Response.Write("a");
        PagedDataSource ps = new PagedDataSource();
        sqlconn = new SqlConnection(sqlstr);
        sqlconn.Open();
        string sql = "select top 5 * from book";
        SqlDataAdapter MyAdapter = new SqlDataAdapter(sql, sqlstr);
        DataSet ds = new DataSet();
        MyAdapter.Fill(ds, "book");
        ps.DataSource = ds.Tables["book"].DefaultView;
        ps.AllowPaging = true; //是否可以分页
        ps.PageSize = 2; //显示的数量
        ps.CurrentPageIndex = curpage - 1; //取得当前页的页码
        this.LinkButton1.Enabled = true;
        this.LinkButton2.Enabled = true;
        this.LinkButton3.Enabled = true;
        this.LinkButton4.Enabled = true;
        if (curpage == 1)
        {
            this.LinkButton1.Enabled = false;//不显示第一页按钮
            this.LinkButton2.Enabled = false;//不显示上一页按钮
        }
        if (curpage == ps.PageCount)
        {
            this.LinkButton3.Enabled = false;//不显示下一页
            this.LinkButton4.Enabled = false;//不显示最后一页
        }
        this.Label2.Text = Convert.ToString(ps.PageCount);
        Repeater1.DataSource = ps;
        Repeater1.DataBind();
        sqlconn.Close();
    }
    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        this.Label1.Text = "1";
        this.bind();
    }
    protected void LinkButton2_Click(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            this.Label1.Text = Convert.ToString(Convert.ToInt32(this.Label1.Text) - 1);
            this.bind();
        }
    }
    protected void LinkButton3_Click(object sender, EventArgs e)
    {
        this.Label1.Text = Convert.ToString(Convert.ToInt32(this.Label1.Text) + 1);
        this.bind();
    }
    protected void LinkButton4_Click(object sender, EventArgs e)
    {
        this.Label1.Text = this.Label2.Text;
        this.bind();
    }
}<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
       <table style="width: 600px; height: 58px;">
            <tr>
                <td style="width: 350px; " align="center">书名</td>
                <td style="width: 100px; " align="center">作者</td>
                <td style="width: 150px; " align="center">出版社</td>
            </tr>
        </table>
       <asp:Repeater ID="Repeater1" runat="server">
        <ItemTemplate>
           <table style="width: 600px; height: 30px;">
            <tr>
                <td style="width: 350px; " align="center">
                    <asp:Label ID="Label1" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"book_name") %>' ></asp:Label></td>
                <td style="width: 100px; " align="center">
                    <asp:Label ID="Label2" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"writer") %>'></asp:Label></td>
                <td style="width: 150px;" align="center">
                    <asp:Label ID="Label3" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"press") %>'></asp:Label></td>
            </tr>
        </table>
        </ItemTemplate>
        </asp:Repeater> 
        <br />
        <table style="width: 600px">
            <tr>
                <td style="width: 100px"  >当前页码为：</td>
                <td >
                    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></td>
                <td style="width: 85px" >总页码为：</td>
                <td >
                    <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label></td>
                <td align="center" >
                    <asp:LinkButton ID="LinkButton1" runat="server" CommandArgument="first" OnClick= "LinkButton1_Click" >首 页</asp:LinkButton>
                </td>
                <td align="center">
                    <asp:LinkButton ID="LinkButton2" runat="server" CommandArgument="prev" OnClick= "LinkButton2_Click">上一页</asp:LinkButton>
                </td>
                <td align="center" >
                    <asp:LinkButton ID="LinkButton3" runat="server" CommandArgument="next" OnClick= "LinkButton3_Click">下一页</asp:LinkButton>
                </td>
                <td align="center" >
                    <asp:LinkButton ID="LinkButton4" runat="server" CommandArgument="last" OnClick= "LinkButton4_Click">尾 页</asp:LinkButton>
                </td>
            </tr>
        </table>
     </div>
    </form>
</body>
</html>
这是我做的 Repeater控件分页，大家帮我看看怎么回事，老是出错。急！