中继器分页视图状态

最后…我有我的中继器工作，因为我希望它是充满按钮，单选按钮，图像按钮，更新面板，AJAX模式弹出框和每个事件背后的沉重的代码。

发现当条目超过20时，我的中继器变得非常慢，因此我使用分页作为解决方案。问题是当我做更改并移动到下一页时，所有的更改都消失了，当回到上一页。(检查收音机、标签等全部恢复正常)。

请帮忙，我的系统正在生产中。

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            loadTasks();
        }

     void loadTasks()
    {
        string evalidxxx = Request.QueryString["eval_id"].Trim().Replace(" ", "");

        SqlConnection conn = new System.Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings["GappConnectionString2"].ConnectionString);
        try
        {
            conn.Open();
            SqlDataAdapter sqlAdapter = new SqlDataAdapter("SELECT Prog_Task_link.pt_seq, Tasks.task_name, Tasks.task_id FROM Tasks INNER JOIN Prog_Task_link ON Tasks.task_id = Prog_Task_link.task_id INNER JOIN Programs ON Prog_Task_link.prog_id = programs.prog_id INNER JOIN Data_Tracker_prepare ON Programs.prog_id = Data_Tracker_prepare.dtpre_prog_id WHERE Data_Tracker_prepare.eval_id =" + evalidxxx, conn);
            System.Data.DataTable dt = new System.Data.DataTable();
            sqlAdapter.Fill(dt);


            PagedDataSource objPds = new PagedDataSource();
            objPds.DataSource = dt.DefaultView;
            objPds.AllowPaging = true;
            objPds.PageSize = 10;
            objPds.CurrentPageIndex = CurrentPage;
            lblCurrentPage.Text = "Page: " + (CurrentPage + 1).ToString() + " of "
                + objPds.PageCount.ToString();
            //Disable Prev or Next buttons if necessary
            LinkPrevPage.Enabled = !objPds.IsFirstPage;
            LinkNextPage.Enabled = !objPds.IsLastPage;
            rptr1.DataSource = objPds;
            rptr1.DataBind();
        }
        catch (SqlException ex)
        {
            Response.Write(ex.Message);
        }
        finally { conn.Close(); }
    }

    public int CurrentPage
    {
        get
        {
            // look for current page in ViewState
            object o = this.ViewState["_CurrentPage"];
            if (o == null)
                return 0;      // default to showing the first page
            else
                return (int)o;
        }
        set
        {
            this.ViewState["_CurrentPage"] = value;
        }
    }
    protected void LinkPrevPage_Click(object sender, EventArgs e)
    {
        CurrentPage -= 1;
        loadTasks();
    }
    protected void LinkNextPage_Click(object sender, EventArgs e)
    {
        CurrentPage += 1;
        loadTasks();
    }