帮我看看Datalist怎么不能翻页
protected   string   s_title= " ";


private   void   Page_Load(object   sender,   System.EventArgs   e)
{
//   在此处放置用户代码以初始化页面
if(!IsPostBack)
{
s_title=Request.QueryString[ "title "];

if(s_title!= " ")
{
txtSearch.Text=s_title;
//SearchMore1.Title=s_title;

}
this.bind();
}
}
private   void   ImageButton2_Click(object   sender,   System.Web.UI.ImageClickEventArgs   e)
{
Response.Redirect( "/web/Search/search.aspx?title= "+this.txtSearch.Text.Trim());
}

private   void   ImageButton1_Click(object   sender,   System.Web.UI.ImageClickEventArgs   e)
{
Response.Redirect( "/web/Search/Search_Gj.aspx ");
}
public   void   bind()
{       string     sql= "Server=(local);database=chtcms;user   id=sa;pwd=sa ";
int   curpage=   Convert.ToInt32(this.Label2.Text);
PagedDataSource   ps   =   new   PagedDataSource();
SqlConnection   sqlcon=   new   SqlConnection(sql);
sqlcon.Open();
string   sqlstr   =   "select   *   from   info   where   title   like   '% "+   txtSearch.Text   + "% ' ";
SqlDataAdapter   da   =   new   SqlDataAdapter(sqlstr,sqlcon);
DataSet   ds   =new   DataSet();
da.Fill(ds, "info ");
ps.DataSource=   ds.Tables[ "info "].DefaultView;
ps.AllowPaging=true;
ps.PageSize=10;
ps.CurrentPageIndex   =   curpage-1;
this.lnkbtone.Enabled=true;
this.Linkbup.Enabled=true;
this.LinkBnext.Enabled=true;
this.LinkBack.Enabled=true;
if(curpage   ==   1)
{
this.lnkbtone.Enabled   =   false;
this.Linkbup.Enabled=false;
}
if(curpage   ==   ps.PageCount)
{
this.LinkBnext.Enabled=false;
this.LinkBnext.Enabled=false;
}
this.Label4.Text=Convert.ToString(ps.PageCount);
this.DataList1.DataSource=   ps;
this.DataList1.DataKeyField= "id ";
this.DataList1.DataBind();
sqlcon.Close();

}


#region   Web   窗体设计器生成的代码
override   protected   void   OnInit(EventArgs   e)
{
//
//   CODEGEN:   该调用是   ASP.NET   Web   窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

///   <summary>
///   设计器支持所需的方法   -   不要使用代码编辑器修改
///   此方法的内容。
///   </summary>
private   void   InitializeComponent()
{        
this.Linkbup.Click   +=   new   System.EventHandler(this.Linkbup_Click);
this.Load   +=   new   System.EventHandler(this.Page_Load);

}
#endregion

private   void   lnkbtone_Click(object   sender,   System.EventArgs   e)
{
this.Label2.Text= "1 ";
this.bind();
}

private   void   Linkbup_Click(object   sender,   System.EventArgs   e)
{
this.Label2.Text=Convert.ToString(Convert.ToInt32(this.Labe