ASP.NET Repeater 控件分页

  protected void Page_Load(object sender, EventArgs e)
        {
            HttpContext context = HttpContext.Current;
            context.User.Identity.
            if(!IsPostBack)
            {
                currPage.Text="1";
                bindData();
            }
           
        }      
        protected void bindData()
        {
            ///获取数据
            string sql = "select * from SA_Tree";
            SqlConnection con = new SqlConnection(connectStr);
            DataSet ds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter(sql,con);
            da.Fill(ds,"test");

            //实例化数据绑定控件
            PagedDataSource ps = new PagedDataSource();
            ps.AllowPaging = true;//设置允许分页
            ps.DataSource = ds.Tables["test"].DefaultView;//设置数据源
            ps.PageSize = 5;//设置每页显示的行数
            
            ps.CurrentPageIndex = Convert.ToInt32(currPage.Text) - 1;//设置当前页索引
            
            
            totalPage.Text = ps.PageCount.ToString();
            //判断当前页是否为首页
            if (ps.IsFirstPage)
            {
                BtnPre.Enabled = false;
            }
            else
            {
                BtnPre.Enabled = true;
            }
            //判断当前页是否为最后一页
            if (ps.IsLastPage)
            {
                BtnNext.Enabled = false;
            }
            else
            {
                BtnNext.Enabled = true;
            }
            Repeater1.DataSource = ps;
            Repeater1.DataBind();
        }
        
        protected void BtnFirst_Click(object sender, EventArgs e)
        {
            currPage.Text = "1";
            bindData();
        }
        protected void BtnNext_Click(object sender, EventArgs e)
        {
            currPage.Text = (Convert.ToInt32(currPage.Text)+1).ToString();
            bindData();
        }
        protected void BtnLast_Click(object sender, EventArgs e)
        {
            currPage.Text = totalPage.Text;
            bindData();
        }
        protected void BtnPre_Click(object sender, EventArgs e)
        {
            currPage.Text = (Convert.ToInt32(currPage.Text) - 1).ToString();
            bindData();
        }

<form id="form1" runat="server">
        <div>
            <span>
                <asp:Label ID="currPage" runat="server"></asp:Label>/<asp:Label ID="totalPage" runat="server"></asp:Label></span>
        </div>
    <div>
        <asp:Repeater ID="Repeater1" runat="server" >
            
            <HeaderTemplate>
                <table class="Treelist">
                   <tr>
                       <th>节点ID</th>
                       <th>节点名称</th>
                       <th>父节点</th>
                       <th></th>
                   </tr>
                
            </HeaderTemplate>
            <ItemTemplate>
                <tr>
                       <th><%# Eval("NodeID") %></th>
                       <th><%# Eval("TreeText") %></th>
                       <th><%# Eval("ParentID") %></th>
                       <th></th>
                   </tr>
            </ItemTemplate>
            <FooterTemplate>
                
                </table>
            </FooterTemplate>
        </asp:Repeater>
         <table>
                     <tr>
                         
                         <td><asp:Button ID="BtnFirst" runat="server" Text="首页" OnClick="BtnFirst_Click"/></td>
                         <td><asp:Button ID="BtnPre" runat="server" Text="上一页" OnClick="BtnPre_Click"/></td>
                         <td><asp:Button ID="BtnNext" runat="server" Text="下一页" OnClick="BtnNext_Click" /></td>
                         <td><asp:Button ID="BtnLast" runat="server" Text="尾页" OnClick="BtnLast_Click"/></td>
                     </tr>
                 </table>
        
    </div>
    </form>