aspx: 
<table border="0" cellpadding="0" cellspacing="0" style=" margin-top:10px;" width="100%">
    <asp:Repeater runat="server" ID="rptypelist"  OnItemDataBound="rptypelist_ItemDataBound"  >
        <ItemTemplate>
       <tr><td>
            <asp:Label ID="lbId" runat="server" Text='<%#Eval("Id") %>' Visible="false"></asp:Label>
            <asp:RadioButtonList ID="rblItem" runat="server"> </asp:RadioButtonList>
       </td> </tr>
       <tr>
        <td >
        <a href='voteCount.aspx?id=<%# DataBinder.Eval(Container.DataItem, "id") %>&voteDetailsID='><asp:Image ID="ImaVote" runat="server" ImageUrl="~/Images/btntoupiao.gif" o /></a>
         </td>
      </tr>
        </ItemTemplate>
    </asp:Repeater>
</table>
.cs:
 protected void RpTypeBind()
        {
            string strSql = "select * from voteMaster  ";
            ds = SqlExec.ExecuteDataSet(strSql);
            this.rptypelist.DataSource = ds;
            this.rptypelist.DataMember = ds.Tables[0].TableName;
            this.rptypelist.DataBind();

        }
  protected void rptypelist_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                RadioButtonList rbl = (RadioButtonList)e.Item.FindControl("rblItem");
                Label lbl = (Label)e.Item.FindControl("lbId");
                DetailsID= Convert.ToInt32( rbl.SelectedValue);
                if (lbl != null)
                {
                    string strSql = "select voteDetailsID,voteItem from voteDetails   where ID = " + Convert.ToInt32(lbl.Text.Trim());
                    ds = SqlExec.ExecuteDataSet(strSql);
                    rbl.DataSource = ds;//指定数据源
                    rbl.DataTextField = "voteItem"; //指定要显示的字段
                    rbl.DataValueField = "voteDetailsID";//指定主键字段
                    rbl.DataBind();//绑定Rd
                }
            }
        }
如何得到嵌套在Repeater里的RadioButtonList控件的SelectedValue的值作为参数传给上面红色的voteDetailsID，因为voteCount.aspx需要voteDetailsID这个值，但是它却是嵌套在Repeater里的RadioButtonList控件的属性，怎么做？或者有没有其它替代方法来实现功能。请大家帮忙解决一下！！！