datalist 后台怎么获取div 并赋样式

 <asp:DataList ID="dlshebeijibenxinxiTableImageList" runat="server" RepeatColumns="4"
            OnItemDataBound="dlshebeijibenxinxiTableImageList_ItemDataBound">
            <ItemTemplate>
                <table class="MS_TBL" border="1px" cellpadding="1px" cellspacing="1px" width="210px">
                    <tr>
                        <td colspan="2">
                            设备编号：<%# Eval("shebeidaihao")%>
                        </td>
                    </tr>
                    <tr>
                        <td colspan="2">
                            <div id="iamgeDiv" runat="server" style=" float:left;">
                                <asp:ImageButton ID="ImageButton1" runat="server" ImageUrl='../Image/shebie.jpg'
                                    Width="150px" Height="62px" CommandArgument='<%#Eval("shebeiID")%>' CommandName="Edit" />
                            </div>
                                <asp:Label ID="lblzhuangtai" runat="server" Text='<%#Eval("zhuangtai")%>'></asp:Label>
                        </td>
                    </tr>
                    <tr>
                        <td style="background-color: Blue;">
                            <asp:ImageButton ID="imgBtnchangdu" runat="server" ImageUrl="../Image/1.jpg" Height="20px" />
                        </td>
                        <td style="text-align: right">
                            <asp:Label ID="Label1" CssClass="ziti" runat="server" Text="45%"></asp:Label>
                        </td>
                    </tr>
                </table>
            </ItemTemplate>
        </asp:DataList>

后台代码
  HtmlGenericControl imangDiv = e.Item.FindControl("iamgeDiv") as HtmlGenericControl;
  imangDiv .Style.Add("background-color", "red");





--------------------编程问答-------------------- 给DIV加个 runat="server" 然后FINDCONTROL试试 --------------------编程问答-------------------- 你想表达什么意思？你这么写没有问题的，可以看看生成的html，样式可能已经加上了，但是被前面的asp:ImageButton 什么的给遮住了

补充：.NET技术 ,  ASP.NET