点击TreeView节点事件

在网页的右边，我想做一个树形菜单，树的节点是一级的，是从数据库表中获得一列名称，点击树节点，在网页的右边显示该节点的一些信息，前台代码和后台分别怎么实现！
我的前台代码（树在td里面）：
 <td rowspan="4" style="background-color: #F4F8FD;"  valign="top" id="td_tree">
               <div id="toolsContent1" class="toolsContent" style="left:20px; width: 117px;">
               <div class="toolsBar"></div>
  <div class="toolsTitle"><a href="#;" id="clickFold1" title="折回" class="clickFold" onclick="fold_IN()">折回</a>  煤矿列表</div>
  <div class="toolsC">
   <div class="toolsCin">
   
       <asp:TreeView ID="TreeView1" AutoGenerateDataBindings="False" runat="server" 
           ShowLines="True" onselectednodechanged="TreeView1_SelectedNodeChanged">
       </asp:TreeView>  
   </div>
  </div>
  </div>
                <ul id="toolsTags" class="toolsTags">
                <li class="now">检索目录一</li>
                </ul>                </td>
                    <td style="width:10px;">
                    </td>
                    <td style="text-align:left; width:100px;">
                    <a id="selectCoal" href="javascript:ShowCoal();">选择煤矿</a>
                    <div id="coalWrapper" style="display:none; border:solid 1px #6699ff; width:150px; z-index:1000; position:absolute;">
                        <div id="toolbar" style="height:20px; background:#d2e0f1; width:auto; position:static;">
                            <a id="selectYes" href="javascript:SelectYes();"><img src="../Images/button/select-yes.gif" style="float:right; padding-top:2px; padding-right:2px; " alt="确定"/></a>
                            <a id="selectNo" href="javascript:SelectNo();"><img src="../Images/button/select-no.gif" style="float:left; padding-top:2px; padding-left:2px;" alt="取消"></a>
                        </div>
                        <select name="ddlCoal" id="ddlCoal" multiple="multiple" style="width:150px;"></select>
                    </div>
                    </td>
后台代码：
 protected void Page_Load(object sender, EventArgs e)
        {
   if (!Page.IsPostBack)
            {
                ParentNode();
            }
        }
        public DataSet dsDataBind(string sqlSelect)  //数据库绑定
        {
            SqlDataAdapter da = new SqlDataAdapter(sqlSelect, sqlCon);
            DataSet ds = new DataSet();
            da.Fill(ds);
            return ds;
        }
        public void ParentNode()    //创建父节点
        {
            string sqlselect = "select * from Sys_Colliery ";
            DataSet ds = dsDataBind(sqlselect);
           // this.TreeView1.Attributes.Add("onselectednodechanged", "return alert('123');");
            if (ds.Tables[0].Rows.Count != 0)
            {
                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    TreeNode tn = new TreeNode();
                    tn.Text = ds.Tables[0].Rows[i]["CollName"].ToString();
                    tn.Value = ds.Tables[0].Rows[i]["CollCode"].ToString();
                    this.TreeView1.Nodes.Add(tn);
                    //tn.NavigateUrl = "./CoalSupervision.aspx";
                                   }
            }        }
        public void CollNode(TreeNode node, string collname)   //取出Sys_Colliery表中的CollName
        {
            DataSet ds = dsDataBind("select * from Sys_Colliery where CollName =" + collname);
            if (ds.Tables[0].Rows.Count != 0)
            {
                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    TreeNode tn = new TreeNode();
                    tn.Text = ds.Tables[0].Rows[i]["collname"].ToString();
                    tn.Value = ds.Tables[0].Rows[i]["CollCode"].ToString();
                    
                }
            }
        }
高手给予指点啊！急用！顺便还有树菜单想做成课隐藏的，点击“折回”，会隐藏到左侧，知道的帮帮！感激不尽！