循环遍历表单上的控件，总是获得第一个控件

我有一个动态加载web用户控件的webform。在web用户控件中有一个重复器控件，并且web用户控件可以根据需要在其内部动态创建多次，所有这些都加载到占位符中。

,

webusercontrol1
   repeater
   webusercontrol
      repeater
   webusercontrol
      repeater
      webusercontrol
         repeater

当我循环遍历占位符中的控件时，出现的唯一重复器是第一个重复器。

我的代码如下:

protected void cmdsave_Click(object sender, EventArgs e)
{
    foreach ( Control ctl in this.officephld.Controls )
    {
        if ( ctl.GetType().ToString() == "ASP.evalctl_ascx" )
        {
            foreach ( Control sctl in ctl.Controls )
            { GetRatingControl(sctl); }
        }
    }
    Response.Redirect("~/contractoreval.aspx?sc=1");
}
protected void GetRatingControl(Control item)
{
    Repeater rpt = (Repeater)item.FindControl("rptPts");
    foreach ( Control ctl in rpt.Controls )
    {
        if ( ctl.GetType().ToString() == "System.Web.UI.WebControls.RepeaterItem" )
        {
            RepeaterItem ri = (RepeaterItem)ctl;
            HiddenField pntid = (HiddenField)ri.FindControl("pntid");
            HiddenField catid = (HiddenField)ri.FindControl("catid");
            HiddenField rating = (HiddenField)ri.FindControl("rating");
            if ( pntid != null && catid != null )
            {
                AjaxControlToolkit.Rating rtg = (AjaxControlToolkit.Rating)ri.FindControl("pntrating");
                SQLConnectivity db = new SQLConnectivity();
                SqlParameter[] param = new SqlParameter[8];
                int iRetValue = 0;
                param[0] = db.MakeInputParameter("@eval_id", Convert.ToInt32(pntid.Value));
                param[1] = db.MakeInputParameter("@category_id", Convert.ToInt32(catid.Value));
                param[2] = db.MakeInputParameter("@organization_id", 1);
                param[3] = db.MakeInputParameter("@subcontractor_id", 1);
                param[4] = db.MakeInputParameter("@project_id", 1);
                param[5] = db.MakeInputParameter("@rating", Convert.ToInt32(rating.Value));
                param[6] = db.MakeInputParameter("@created_by", 1);
                param[7] = db.MakeInputParameter("@updated_by", 1);
                db.RunNonQueryProcedure("PerformanceSubcontractorEvalSave", param, ref iRetValue);
            }
        }
    }
}

编辑 对于中继器，此隐藏字段评级仅在第一个重复控件上生效，以下是我的HTML标记:

<asp:Repeater ID="rptPts" runat="server" Visible="false" 
    onitemdatabound="rptPts_ItemDataBound">
    <HeaderTemplate></HeaderTemplate>
    <ItemTemplate>
        <div style="width:75%;float:left;padding-top:3px;height:20px;">
            <asp:Label runat="server" ID="Label1" Text='<%#DataBinder.Eval(Container.DataItem, "eval_description") %>' Font-Names="Arial" Font-Size="10px"></asp:Label>
        </div>
        <asp:HiddenField ID="catid" runat="server" />
        <asp:HiddenField ID="pntid" runat="server" />
        <asp:HiddenField ID="rating" runat="server" />
        <div style="width:20%;float:right;padding-top:3px;padding-bottom:3px;height:20px;">
            <cc1:Rating ID="pntrating" runat="server" FilledStarCssClass="filldStar" OnChanged="pntrating_Changed" EmptyStarCssClass="emptyStar" StarCssClass="filldStar" WaitingStarCssClass="savedStar" EnableViewState="true" AutoPostBack="false" BehaviorID="ratingControlBehavior">
            </cc1:Rating>
        </div>
        <div style="clear:both;"></div>
    </ItemTemplate>
    <FooterTemplate></FooterTemplate>
</asp:Repeater>

我如何循环遍历各种级别的中继器控制并在此设置中获得中继器项目?