Ajax UpdatePanel刷新的问题

在我的页面中有两个Panel
一个panel中放置了产品列表供给PopupControlExtender1弹出，选择的值返回给产品TextBox
另一个Panel中放置了一个Canlendar，由PopupControlExtender2弹出，选择的值返回给日期TextBox
两个Panel中都放置有UpdatePanel ，产品列表和Canlendar都放置在<contentTemplate></contentTemplate>中

在另一个UpdatePanel（UP3）中放置了一个Repeater，其DataSourceID指定为一个提供次品类型的SqlDataSource，
当页面第一次载入时，显示某某次品类型和一文本框等待输入次品数量；当产品和日期都选择了之后，希望能根据其将对应的
次品数量显示出来。

我用了两个方法均不行，
1、我用sm1.RegisterAsyncPostBackControl(Button1);注册了一个Button，
2、在PopupControlExtender.Commit()之后调用up3.update()


以下是源代码，请各位大佬帮忙

<%@ Control Language="C#" ClassName="spc" %>

<%@ Import Namespace="admin" %>

<%@ Import Namespace="System.Data.SqlClient" %>

<%@ Import Namespace="System.Data" %>



<script runat="server">

    private SqlConnection conn;

    private string cmdtext;

    private DataSet dataset;

    

    protected void Page_Load(object sender, EventArgs e)

    {

        string connstr = new conn().constr();

         dataset = new DataSet();

        //cmdtext = "select * from TB_cptype where ID<>28 order by ID";

        conn = new SqlConnection(connstr);

        conn.Open();

        sm1.RegisterAsyncPostBackControl(Button1);

        //new SqlDataAdapter(cmdtext,this.conn).Fill(dataset,"cp");

        //Repeater1.DataSource=dataset.Tables["cp"].DefaultView;

        //Repeater1.DataBind();

        cmdtext = "select pn,ID from TB_products order by ID";

        new SqlDataAdapter(cmdtext, conn).Fill(dataset, "pn");

        rbl_PN.DataSource = dataset.Tables["pn"].DefaultView;

        rbl_PN.DataTextField = "pn";

        rbl_PN.DataValueField = "ID";

        rbl_PN.DataBind();

    }



    protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)

    {

        TextBox txtcp = (TextBox)e.Item.FindControl("txt1");

        Label lbltypename=(Label)e.Item.FindControl("typename");

      

        //Mytools.print(txtPN.Text);

            

        //if (txtcp == null)

        //{

        //     txtcp = (TextBox)e.Item.FindControl("txt" + lbltypename.Text);

        //     tmp = "txtcp=null";

        //}

        //txtcp.ID = "txt" + lbltypename.Text;



        txtcp.Text = txtcp.Text + DateTime.Now.ToLocalTime().ToString();





    }







    protected void calDay_SelectionChanged(object sender, EventArgs e)

    {

        

        pce1.Commit(calDay.SelectedDate.ToShortDateString());

       // Repeater1.DataBind();

       // up3.Update();

    }



    protected void txtsearch_TextChanged(object sender, EventArgs e)

    {





        cmdtext = "select pn,ID from TB_products where pn like '%"+txtsearch.Text+"%' order by ID";

        new SqlDataAdapter(cmdtext, conn).Fill(dataset, "pn1");

        rbl_PN.DataSource = dataset.Tables["pn1"].DefaultView;

        rbl_PN.DataTextField = "pn";

        rbl_PN.DataValueField = "ID";

        rbl_PN.DataBind();

    }



    protected void rbl_PN_SelectedIndexChanged(object sender, EventArgs e)

    {



        pce2.Commit(rbl_PN.SelectedItem.Text);

      //  Repeater1.DataBind();

        //up3.Update();

        rbl_PN.ClearSelection();

       

    }





    protected void Repeater1_Load(object sender, EventArgs e)

    {

        Repeater rep = (Repeater)sender;

        for (int j = 0; j <= rep.Items.Count - 1; j++)

        {

            TextBox txtcp = (TextBox)rep.Items[j].FindControl("txt1");

            Label lbltypename = (Label)rep.Items[j].FindControl("typename");

            txtcp.Text =txtcp.Text+ DateTime.Now.ToShortTimeString();

        }

        //Mytools.print(txtPN.Text);



        //if (txtcp == null)

        //{

        //     txtcp = (TextBox)e.Item.FindControl("txt" + lbltypename.Text);

        //     tmp = "txtcp=null";

        //}

        //txtcp.ID = "txt" + lbltypename.Text;



        



    }



    protected void Button1_Click(object sender, EventArgs e)

    {

        Repeater1.DataBind();

        //Repeater rep = (Repeater)sender;

        //for (int j = 0; j <= Repeater1.Items.Count - 1; j++)

        //{

        //    TextBox txtcp = (TextBox)Repeater1.Items[j].FindControl("txt1");

        //    Label lbltypename = (Label)Repeater1.Items[j].FindControl("typename");

        //    txtcp.Text = txtcp.Text + DateTime.Now.ToShortTimeString();

        //}

       // up3.Update();

    }

</script>

<asp:ScriptManager ID="sm1" EnablePartialRendering="true" runat="server"></asp:ScriptManager>

<asp:Panel ID="p2_PN" Width="150px" BackColor="ActiveBorder" BorderColor="GhostWhite" BorderStyle="Solid" runat="server">

<asp:UpdatePanel ID="up2" ChildrenAsTriggers="true" UpdateMode="Conditional"  runat="server" >

<ContentTemplate>

搜索：<asp:TextBox ID="txtsearch" AutoPostBack="true" Width="80px" runat="server" OnTextChanged="txtsearch_TextChanged"></asp:TextBox>

<asp:RadioButtonList ID="rbl_PN"  AutoPostBack="true" runat="server" OnSelectedIndexChanged="rbl_PN_SelectedIndexChanged">

</asp:RadioButtonList>

</ContentTemplate>



</asp:UpdatePanel>

</asp:Panel>



<asp:Panel ID="p1" runat="server">

<asp:UpdatePanel ID="up1" ChildrenAsTriggers="true"  runat="server">

<ContentTemplate>

<asp:Calendar ID="calDay" runat="server"  OnSelectionChanged="calDay_SelectionChanged" BackColor="#FFFFCC" BorderColor="#FFCC66" BorderWidth="1px" DayNameFormat="Shortest" Font-Names="Verdana" Font-Size="8pt" ForeColor="#663399" Height="200px" ShowGridLines="True" Width="220px">

    <SelectedDayStyle BackColor="#CCCCFF" Font-Bold="True" />

    <SelectorStyle BackColor="#FFCC66" />

    <TodayDayStyle BackColor="#FFCC66" ForeColor="White" />

    <OtherMonthDayStyle ForeColor="#CC9966" />

    <NextPrevStyle Font-Size="9pt" ForeColor="#FFFFCC" />

    <DayHeaderStyle BackColor="#FFCC66" Font-Bold="True" Height="1px" />

    <TitleStyle BackColor="#990000" Font-Bold="True" Font-Size="9pt" ForeColor="#FFFFCC" />

</asp:Calendar>

</ContentTemplate>

</asp:UpdatePanel>

</asp:Panel>



<cc1:PopupControlExtender ID="pce1"  PopupControlID="p1" TargetControlID="txtCalendar" Position="Right" CommitProperty="value" CommitScript="e.value" runat="server" >

</cc1:PopupControlExtender>

<cc1:PopupControlExtender ID="pce2"  PopupControlID="p2_PN" TargetControlID="txtPN" Position="Right" CommitProperty="value" CommitScript="e.value" runat="server" >

</cc1:PopupControlExtender>



<table width="80%" cellpadding=0 cellspacing=0>

<tr>

<td>请选择产品</td>

<td>

<asp:TextBox ID="txtPN"  runat="server"></asp:TextBox>



    </td>



</tr>

<tr style="background-color:LightGray">

<td>请选择日期</td>

<td><asp:TextBox ID="txtCalendar" runat="server"></asp:TextBox></td>

<asp:Label ID="lblmsg" runat="server"></asp:Label></tr>



<asp:UpdatePanel ID="up3" runat="server"  >

<ContentTemplate>

<asp:Repeater ID="Repeater1" DataSourceID="sds_Input"    runat="server" OnItemDataBound="Repeater1_ItemDataBound" OnLoad="Repeater1_Load">



<AlternatingItemTemplate>

<tr style="background-color:LightGray">

<td><%#Eval("descript")%><asp:Label ID="typename" runat="server" Text='<%#Eval("typename") %>' Visible="false"></asp:Label></td>

<td><asp:TextBox ID="txt1" runat="server"></asp:TextBox></td>



</tr>

</AlternatingItemTemplate>

<ItemTemplate>

<tr>

<td><%#Eval("descript")%></td>

<td><asp:TextBox ID="txt1" runat="server"></asp:TextBox><asp:Label ID="typename" runat="server" Text='<%#Eval("typename") %>' Visible="false"></asp:Label></td>



</tr>

</ItemTemplate>

</asp:Repeater>

<asp:SqlDataSource ID="sds_Input" runat="server" SelectCommand="select * from TB_cptype where ID<>28" ConnectionString="<%$ ConnectionStrings:TwebConnectionString %>" ProviderName="<%$ ConnectionStrings:TwebConnectionString.ProviderName %>" ></asp:SqlDataSource>



</ContentTemplate>



</asp:UpdatePanel>

</table>

<asp:But