两个Repeater嵌套实现动态菜单(ado.net+sql和xml+Linq两种读取数据方式)

今天在实现一个增强web项目可扩展性的一个功能，把以前的静态菜单改成了动态的扩展、可维护的菜单

1、菜单存储在数据表中

<asp:Repeater ID="Repeater1" runat="server" 
            onitemdatabound="Repeater1_ItemDataBound">
        <ItemTemplate>
         <h1 class="type"><a href="javascript:void(0)"><%# DataBinder.Eval(Container.DataItem, "MT_name")%></a></h1>
            <asp:Repeater ID="Repeater2" runat="server">
            <HeaderTemplate> 
            <div class="content">
            <table width="100%" border="0" cellspacing="0" cellpadding="0">
            <tr>
              <td><img src="images/menu_topline.gif" width="182" height="5"/></td>
            </tr>
          </table>
        <ul class="MM">
            </HeaderTemplate>
            <ItemTemplate>
             <li><a href="<%# DataBinder.Eval(Container.DataItem, "MI_page")%>" target="main"><%# DataBinder.Eval(Container.DataItem, "MI_name")%></a></li>
            </ItemTemplate> 
            <FooterTemplate>
            </ul></div>
            </FooterTemplate>
            </asp:Repeater>
        </ItemTemplate>
        </asp:Repeater>

　服务器端代码

publicpartialclass left : System.Web.UI.Page
    {
        protectedvoid Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                string sql ="select MT_ID,MT_name from ModuleTopInfo";
                SqlDbHelper db =new SqlDbHelper();//SqlHelper类你懂得
                Repeater1.DataSource =db.ExecuteDataTable(sql);
                Repeater1.DataBind();
            }
        }

        protectedvoid Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                string id = ((DataRowView)e.Item.DataItem).Row["MT_ID"].ToString();
                Repeater rpt = (Repeater)e.Item.FindControl("Repeater2");
                string sql ="select MI_ID,MI_page,MI_name from ModuleInfo where MT_ID=@id";
                SqlParameter[] parameters =new SqlParameter[] {
                    new SqlParameter("@id",id)
                };
                SqlDbHelper db =new SqlDbHelper();
                DataTable dt =new DataTable();
                dt = db.ExecuteDataTable(sql,CommandType.Text,parameters);
                if (rpt !=null)
                {
                    rpt.DataSource = dt;
                    rpt.DataBind();
                }
            }
        }

　实现效果截图

2、菜单在xml文件

xml

<?xml version="1.0" encoding="utf-8" ?>
<AdminMenu>
  <Menus Text="内容管理" id="1">
    <MenuItem Text="中心简介维护" url="#" id="1" />
    <MenuItem Text="科研方向维护" url="#"  id="1"  />
    <MenuItem Text="荣获奖励维护" url="#"  id="1"  />
    <MenuItem Text="技术文章维护" url="#"  id="1"  />
    <MenuItem Text="实训项目维护" url="#"  id="1"  />
    <MenuItem Text="规章制度维护" url="#"  id="1"  />
    <MenuItem Text="首页简介维护" url="#"  id="1"  />
  </Menus>
  <Menus Text="学生报名" id="2">
    <MenuItem Text="开通报名系统" url="#" id="2" />
    <MenuItem Text="学生信息查询" url="#" id="2"/>
    <MenuItem Text="学生信息维护" url="#" id="2" />
    <MenuItem Text="添加通过学生" url="#" id="2"/>
  </Menus>
  <Menus Text="教师维护" id="3">
    <MenuItem Text="开通教师账号" url="#" id="3"/>
    <MenuItem Text="教师信息维护" url="#" id="3" />
  </Menus>
  <Menus Text="图片维护" id="4">
    <MenuItem Text="上传图片" url="#" id="4" />
    <MenuItem Text="图片管理" url="#" id="4" />
  </Menus>
  <Menus Text="个人资料" id="5">
    <MenuItem Text="修改密码" url="#" id="5"/>
  </Menus>
</AdminMenu>

页面主要代码

<asp:Repeater ID="Repeater1" runat="server" 
            onitemdatabound="Repeater1_ItemDataBound">
        <ItemTemplate>
        <tr>
        <td class="menu_first_img mouse" id="td<%# DataBinder.Eval(Container.DataItem, "id") %>" onClick="show(<%# DataBinder.Eval(Container.DataItem, "id") %>)"><div class="menu" ><a href="#"  style=" color:White; text-decoration:none">
        <%# DataBinder.Eval(Container.DataItem, "Text")%>
        </a> </div></td>
        </tr>    
        <tr>
        <td id="show<%# DataBinder.Eval(Container.DataItem, "id") %>" style=" display:none;" ><table width="100%" border="0" cellspacing="0" cellpadding="0">
            <asp:Repeater ID="Repeater2" runat="server">
    <ItemTemplate>       
          <tr>
            <td class="left"><table width="100%" height="24" border="0" cellpadding="0" cellspacing="0">
              <tr>
                <td width="40" align="center"><img src="../images/5.png" alt="1" width="16" height="16"></td>
                <td><div class="menu1"><a href="<%# DataBinder.Eval(Container.DataItem, "url")%>" style=" color:White; text-decoration:none">
                <%# DataBinder.Eval(Container.DataItem, "menuText")%>
                </a> </div></td>
              </tr>
            </table></td>
          </tr>
          </ItemTemplate>
            </asp:Repeater></table></td></tr>
     </ItemTemplate>
     </asp:Repeater>

后台代码

  protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                string path = Server.MapPath("~/Manger/MenuXML/admin.xml");
                XElement root = XElement.Load(path);
                var result = from menu in root.Elements("Menus")
                             select new
                             {
                                 Text = menu.Attribute("Text").Value,
                                 ID = menu.Attribute("id").Value
                             };
                Repeater1.DataSource = result;
                Repeater1.DataBind();
            }

        }

        protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                string id = DataBinder.Eval(e.Item.DataItem, "id").ToString();
                Repeater rpt = (Repeater)e.Item.FindControl("Repeater2");
                string path = Server.MapPath("~/Manger/MenuXML/admin.xml");
                XElement root = XElement.Load(path);
                var result = from menu in root.Descendants("MenuItem")
                             where menu.Attribute("id").Value.Equals(id)
                             select new
                             {
                                 menuText = menu.Attribute("Text").Value,
                                 url = menu.Attribute("url").Value,
                                 curid = menu.Attribute("id").Value
                             };
                if (rpt != null)
                {
                    rpt.DataSource = result;
                    rpt.DataBind();
                }
            }
        }

实现截图