关于标识列

关于标识列求助
在repeater中的标识列，并不现实成数字，直接在页面显示，报错

<asp:Repeater ID="rep1" runat="server" OnItemDataBound="rep1_ItemDataBound">

            <ItemTemplate>

            <tr>

                <td>                   

                        <table id='<%#"table"+Container.ItemIndex %>'  runat="server" width="152" border="0" cellspacing="0" cellpadding="0"  >

                            <tr style="cursor: pointer;" onclick='showsubmenu(<%#Container.ItemIndex %>)'>

                                <td width="120" height="24" class="white12" style="padding-left: 10px;">

                                  <%#Eval("NewsTypename")%>

                                </td>

                                <td width="32" align="left">

                                    <img src="images/sj_1.gif" width="9" height="5" border="0" />

                                </td>

                            </tr>

                        </table>

                        <div id="submenu<%#Container.ItemIndex %>" style="padding: 6px 0px 6px 0px; margin-bottom: 10px; background-image: url(images/left_qh_bg_2.jpg);       display: none;">

                            <table width="152" border="0" cellspacing="0" cellpadding="0">

                                <asp:Repeater ID="rep2" runat="server">

                                <ItemTemplate>