绑定后数据后设置div的class属性

C# code

 <table border="0" cellspacing="0" cellpadding="0" width="96%">                            <tbody>                                <tr>                                    <td height="33" align="left">                                        <div class="bottomNewsTitle">                                            <ul>                                                <asp:Repeater ID="rtitle" runat="server">                                                    <ItemTemplate>                                                        <li class="ti tle_Off" id="titleT<%# Container.ItemIndex %>" onmouseover="PanShow('title',<%# Container.ItemIndex %>,3)">                                                            <%#Eval("Nclass")%></li>                                                    </ItemTemplate>                                                </asp:Repeater>                                            </ul>                                        </div>                                    </td>                                </tr>                            </tbody>                        </table>运行生成后的html如下：<table border="0" cellspacing="0" cellpadding="0" width="96%">                            <tbody>                                <tr>                                    <td height="33" align="left">                                        <div class="bottomNewsTitle">                                            <ul>                                                                                                        <li class="ti tle_Off" id="titleT0" onmouseover="PanShow('title',0,3)">                                                            综合考评</li>                                                                                                            <li class="ti tle_Off" id="titleT1" onmouseover="PanShow('title',1,3)">                                                            中学教育</li>                                                                                                            <li class="ti tle_Off" id="titleT2" onmouseover="PanShow('title',2,3)">                                                            小学教育</li>                                                                                                            <li class="ti tle_Off" id="titleT3" onmouseover="PanShow('title',3,3)">                                                            幼儿教育</li>                                                                                                </ul>                                        </div>                                    </td>                                </tr>                            </tbody>

绑定后所有class的属性都为ti tle_Off
<li class="title_Off" id="titleT0" onmouseover="PanShow('title',0,3)">

现在我是想在绑定后让第一个class属性改为title_on
如下

<ul>

<li class="title_on" id="titleT0" onmouseover="PanShow('title',0,3)">
综合考评</li>

<li class="title_Off" id="titleT1" onmouseover="PanShow('title',1,3)">

中学教育</li>

<li class="title_Off" id="titleT2" onmouseover="PanShow('title',2,3)">
小学教育</li>

<li class="title_Off" id="titleT3" onmouseover="PanShow('title',3,3)">
幼儿教育</li>

</ul>


[解决办法]
<li class='<%#Container.ItemIndex==0?"title_on":"title_Off"%>' id="titleT0" onmouseover="PanShow('title',0,3)">综合考评</li>