模拟QQ下拉菜单-Nonsowwolf

.aspx代码
======================
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>无标题页</title>

    <style type="text/css"> 
  </style>
  <script language="javascript" type="text/javascript">
     function showMenu(id,count)
  {

   td_id = eval("td" + id);
   if (td_id.style.display == "none")
   {
    for(var num=0;num<Number(count);num++)
      {
     var tdid = String(num);
     eval("td" + tdid + ".style.display=\"none\";");
    }
    eval("td" + id+ ".style.display=\"\";");

   }

  }

  </script>

</head>
<body>
    <form >
                    </table>
                </td>
            </tr>
        </table>
    </form>
</body>
</html>

.cs文件
=========================================

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class TwoQQ : System.Web.UI.Page
{
private string connectionstring = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"];

protected void Page_Load(object sender, EventArgs e)
{

BindData();
}

    private void BindData()
    {
        SqlConnection com = new SqlConnection(connectionstring);
        string sqlStr = " select * from tb_parent ";
        SqlDataAdapter dal = new SqlDataAdapter(sqlStr,com);
        DataSet ds = new DataSet();
        dal.Fill(ds, "db_Menu");
        DataView dv = ds.Tables["db_Menu"].DefaultView;

        for (int i = 0; i < dv.Count;i++ )
        {
            //一级目录
            HtmlTableRow myrow = new HtmlTableRow();
            tabMenu.Rows.Add(myrow);

            HtmlTableCell mycell = new HtmlTableCell();
            myrow.Cells.Add(mycell);
            mycell.Height = "22px";
            mycell.Width = "160px";
            mycell.Width = "100%";
            mycell.Align = "center";
            mycell.Attributes.Add("OnClick", "showMenu('"+i+"','"+dv.Count+"')");
            mycell.Attributes.Add("style", "cursor:hand");
            mycell.InnerHtml = dv[i]["parentName"].ToString();

//二级目录
int ParentID = Convert.ToInt32(dv[i]["ids"].ToString());

            string strSql2 = "select * from tb_child where parentId="+ParentID;
            SqlDataAdapter dal2 = new SqlDataAdapter(strSql2,com);
            DataSet ds2 = new DataSet();
            dal2.Fill(ds2, "db_Menu");
            DataView dv2 = ds2.Tables["db_Menu"].DefaultView;

HtmlTableRow myrow2 = new HtmlTableRow();
tabMenu.Rows.Add(myrow2);

HtmlTableCell mycell2 = new HtmlTableCell();
myrow2.Cells.Add(mycell2);

           //// mycell2.BgColor = "#336699";
            mycell2.Width = "100%";
            mycell2.Align = "center";
            mycell2.ID = "td" + i.ToString();
            mycell2.Height = "100%";
            if (i != 0)
            {
                mycell2.Style["display"]="none";
            }
            mycell2.VAlign = "top";

            HtmlTable mytable = new HtmlTable();
            mycell2.Controls.Add(mytable);
            for (int j = 0; j < dv2.Count;j++ )
            {
                HtmlTableRow mytablerow = new HtmlTableRow();
                mytable.Rows.Add(mytablerow);

                HtmlTableCell mytablecell = new HtmlTableCell();
                mytablerow.Cells.Add(mytablecell);
                mytablecell.Width = "100%";
                mytablecell.Height = "22px";
                mytablecell.Align = "center";
                mytablecell.InnerHtml = "<a href='aa.aspx?;

}
}