如何实现TreeView的双击事件？

<script language="javascript">
<!--
function TrvModel_DblClick()
{
   window.document.VindicateModel.Isdbclick.value="true";
                   ---Form 的 ID
   window.document.VindicateModel.submit();
}
-->
</script>

<input type="hidden" name="Isdbclick" value="false">
<iewc:treeview id="trvModel" ondblclick="javascript:TrvModel_DblClick()" style="Z-INDEX: 101; LEFT: 6px; POSITION: absolute; TOP: 14px" runat="server"  Width="216px" Height="158px">

private void Page_Load(object sender, System.EventArgs e)
{
 // 在此处放置用户代码以初始化页面
 if (Page.IsPostBack)
 {
if (Request.Form["Isdbclick"]!=null)
    {
{
 if (Request.Form["Isdbclick"].ToString()=="true")
 {
  trvModel_DblClick();
 }
 }
}
}

public void trvModel_DblClick()
{
    ...写你要做的事情就OK了，哈哈
}