Datalist控制一行显示多列宽度设置

<asp:DataList runat="server" ItemStyle-Width= "50%"  Width="100%" ID="dlSubSubCourseSet" RepeatDirection="Horizontal"
                                                                RepeatColumns="2">
                                                                <ItemTemplate>
                                                                   
                                                                        <table width="96%" border="0" align="left" cellpadding="0" cellspacing="0">
                                                                            <tr>
                                                                                <td height="26" align="left">
                                                                                    <%# Eval("C_ItemsTitle") %>
                                                                                </td>
                                                                                <td width="60" align="center">
                                                                                    <a href="javascript:window.location.href=window.location.href" class="easyui-linkbutton"
                                                                                        iconcls="icon-edit" plain="true" onclick="javascript:window.open('../CourseSet/editset.aspx?CourseItemsID=103')">
                                                                                        编辑</a></td>
                                                                                <td width="60" align="center">
                                                                                    <a href="javascript:window.location.href=window.location.href" class="easyui-linkbutton"
                                                                                        iconcls="icon-cancel" plain="true" onclick="javascript:window.open('../CourseSet/editset.aspx?CourseItemsID=103')">
                                                                                        删除</a>
                                                                                </td>
                                                                            </tr>
                                                                            <tr>
                                                                                <td height="1" colspan="3" background="<%=Page.ResolveClientUrl("~/")%>themes/<%=EtrmsLibrary.Common.EtrmsThemes%>/images/index_2_r10_c2.jpg">
                                                                                </td>
                                                                            </tr>
                                                                        </table>
                                                                  
                                                                </ItemTemplate>
                                                            </asp:DataList>