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<%@ Control Language="C#" AutoEventWireup="true" CodeFile="category.ascx.cs" Inherits="category"  %>
<style type="text/css">
    .style3
    {
        width: 100%;
    }
</style>
<div class="sn_Menu_content indexMenu" id="SideNav">
<div class="sn_Menu_content indexMenu" id="Div1">
<table border="1" class="style3" style="border-color: #FF0000">
    <tr>
        <td class="style4" 
            style="border-width: thin; border-style: solid; border-color: #FF0000;">
            <asp:Repeater ID="rFatherCategory" runat="server" 
        onitemdatabound="rFatherCategory_ItemDataBound">
        <ItemTemplate>
            <dl>
                <asp:HiddenField ID="HiddenField1" runat="server" Value='<%#Eval("Id") %>' />
                <br />
                    <a href='p_list.aspx?categoryId=<%#Eval("Id") %>'
                        target="_blank" style="color: #FF0000; font-size: 19px; font-family: 黑体;"><%#Eval("CategoryName")%></a>
                <asp:DataList ID="DataList1" runat="server" CellPadding="2"  RepeatColumns="1" Font-Size="11" Width="200px">
<%--                <FooterStyle BackColor="White" ForeColor="#333333" />--%>
<%--                <HeaderStyle BackColor="#336666" Font-Bold="True" ForeColor="White" />--%>
<%--                <ItemStyle HorizontalAlign="Left" ForeColor="#333333" 
                    BackColor="White"></ItemStyle>--%>
                <ItemTemplate>
                    <table border="0">
                    <tr>
                        <td style="width: 50px">
                            &nbsp;</td>
                        <td style="text-align: left">
                        <asp:LinkButton ID="LinkButton1" runat="server" PostBackUrl='<%#Eval("Id","~/advanced_Query.aspx?Id={0}") %>' ><%# Eval("CategoryName")%></asp:LinkButton></td>
                        <td style="width: 30px">
                            &nbsp;</td>
                    </tr>
                    </table>
                </ItemTemplate>
                <HeaderTemplate>
                <br />
                </HeaderTemplate>
<%--                <SelectedItemStyle BackColor="#339966" Font-Bold="True" ForeColor="White" />--%>
            </asp:DataList>
                <div class="sidenavlink01 sidenavchild">
                    <ul class="sideleft">
                        <h3>
                             <a href='p_list.aspx?categoryId=<%#Eval("Id") %>'  target="_blank"><%#Eval("CategoryName") %></a></h3>
                            <asp:Repeater ID="rSonCategory" runat="server" onitemdatabound="rSonCategory_ItemDataBound">
                            <ItemTemplate>
                                 <%if (i == 0)
                                  { %>
                                <li class="noline">
                                <%}
                                      else
                                      { %>
                                      <li>
                                      <%} i++; %>
                                <b><a href='p_list.aspx?categoryId=<%#Eval("Id") %>'  target="_blank"><%#Eval("category_name") %></a></b>
                                    <div>
                                    <asp:Repeater ID="rThreeCategory" runat="server">
                                    <ItemTemplate>
                                    <a href='p_list.aspx?categoryId=<%#Eval("Id") %>' title='<%#Eval("category_name") %>'
                                            target="_blank"><%#Eval("category_name") %></a>
                                    </ItemTemplate>
                                    </asp:Repeater>
                                    </div>
                                    <span class="clear"></span></li>
                            </ItemTemplate>
                            </asp:Repeater>
                           <%i = 0; %>
                    </ul>
                    <ul class="sideright">
                        <h3>
                            品牌推荐  
                            <asp:LinkButton ID="LinkButton1" runat="server" ForeColor="Red" PostBackUrl='<%#Eval("Id","p_list.aspx?categoryId={0}%>") %>'>更多</asp:LinkButton></h3>
                            <asp:Repeater ID="rBrandList" runat="server" onitemdatabound="rBrandList_ItemDataBound">
                            <ItemTemplate>
                                <li><asp:HyperLink ID="hlBrandLink" runat="server" Target="_blank"><%#Eval("brand_name") %></asp:HyperLink></li>
                            </ItemTemplate>
                            </asp:Repeater>
                    </ul>
                </div>
            </dl>
        </ItemTemplate>
    </asp:Repeater>
            <br />
    <br />
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    <asp:HyperLink ID="HyperLink2" runat="server" Text="查看全部分类"  
        NavigateUrl="~/advanced_Query.aspx" ForeColor="Red" />
<%--    <img alt="" class="style2" src="images/icon-024.gif" /> --%>
        </td>
    </tr>
</table>
    </div>
</div>
以上是用户控件HTML代码using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using THSC.Model;
using THSC.BLL;
using System.Collections.Generic;
using System.Reflection;public partial class category : System.Web.UI.UserControl
{
    protected int i = 0;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            rFatherCategory_load();
    }
    private void rFatherCategory_load()
    {
        //string where = "is_show=1 and father_id=0";
        //string fieldList = "Id,category_name,is_show,father_id,order_by";
        //string orderField = "order_by";
        //bool orderby = true;
        //DataRecordTable table = new ProductCategoryBusiness().GetList(fieldList, orderField, orderby, 1, 9, where);
        //List<DataRecordTable> data = DataTableToList<DataRecordTable>(table.Table);
        List<ProductCategory> prolist = new ProductCategoryBusiness().GetTops();
        rFatherCategory.DataSource = prolist;
        rFatherCategory.DataBind();
    }
    protected void rFatherCategory_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {
        HiddenField hi = e.Item.FindControl("HiddenField1") as HiddenField;
        DataList re = e.Item.FindControl("DataList1") as DataList;
        re.DataSource = new ProductCategoryBusiness().GetTopFather(Convert.ToInt32(hi.Value));
        re.DataBind();
        int Id = int.Parse(DataBinder.Eval(e.Item.DataItem, "Id").ToString());
        string where = "is_show=1 and father_id=" + Id + "";
        string fieldList = "Id,category_name,is_show,father_id,order_by";
        string orderField = "order_by";
        bool orderby = true;
        Repeater rSonCategory = e.Item.FindControl("rSonCategory") as Repeater;
        DataRecordTable table = new ProductCategoryBusiness().GetList(fieldList, orderField, orderby, 1, 20, where);
        if (rSonCategory != null)
        {
            rSonCategory.DataSource = table.Table;
            rSonCategory.DataBind();
        }        Repeater rBrandList = e.Item.FindControl("rBrandList") as Repeater;
        table = new ProductBrandBusiness().GetList("Id,category_id,brand_name,order_by", "order_by", true, 1, 20, "is_show=1 and category_id=" + Id);
        if (rBrandList != null)
        {
            rBrandList.DataSource = table.Table;
            rBrandList.DataBind();
        }
    }
    protected void rSonCategory_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {
        
        int Id = int.Parse(DataBinder.Eval(e.Item.DataItem, "Id").ToString());
        string where = "is_show=1 and father_id=" + Id;
        string fieldList = "Id,category_name,is_show,father_id,order_by";
        string orderField = "order_by";
        bool orderby = true;
        Repeater rThreeCategory = e.Item.FindControl("rThreeCategory") as Repeater;
        DataRecordTable table = new ProductCategoryBusiness().GetList(fieldList, orderField, orderby, 1, 20, where);
        if (rThreeCategory != null)
        {
            rThreeCategory.DataSource = table.Table;
            rThreeCategory.DataBind();
        }
        //Repeater re = e.Item.FindControl("Repeater1") as Repeater;
        //re.DataSource = new ProductCategoryBusiness().GetType();
        //re.DataBind();
    }
    protected void rBrandList_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {
        string categoryId = DataBinder.Eval(e.Item.DataItem, "category_id").ToString();
        string brandId = DataBinder.Eval(e.Item.DataItem, "Id").ToString();
        HyperLink hlBrandLink = e.Item.FindControl("hlBrandLink") as HyperLink;
        LinkButton linkbtn = e.Item.FindControl("LinkButton1") as LinkButton;
        if (hlBrandLink != null && linkbtn != null)
            hlBrandLink.NavigateUrl = "p_list.aspx?categoryId=" + categoryId + "&brandId=" + brandId;
        linkbtn.PostBackUrl = "/~p_list.aspx?categoryId=" + categoryId + "&brandId=" + brandId;
    }
以上是后置代码，我想在显示的时候鼠标放在那个上面就用DIV显示这个节点的 子节点

Answer 1

只要可以达到用DIV显示这个节点的 子节点 就可以