在后台如何为表格添加已定义好的css样式
<table id="tbAnswer" runat="server" style="margin:auto; margin-top:25px;" visible="false"> <tr><td class="vipRole_td" colspan="2">测试页面</td></tr> <tr> <td><asp:TextBox ID="txtAnswer" runat="server" TextMode="MultiLine" Columns="50" Rows="10" MaxLength="500"></asp:TextBox></td> <td> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="测试内容不能为空!" ControlToValidate="txtAnswer"></asp:RequiredFieldValidator> </td> </tr> <tr> <td id="tdSubmint" runat="server" align="center"><asp:ImageButton ID="ibtnAnswer" runat="server" ImageUrl="~/Cp_Admin/images/SubmitAnswer.png" onclick="ibtnAnswer_Click" /></td> </tr> </table>