#region 树型菜单TreeView1
    /// <summary>
    /// 树型菜单TreeView1
    /// </summary>
    /// <param name="t1">TreeView空件</param>
    /// <param name="boot">父目录sql语句</param>
    /// <param name="chird">子目录sql语句</param>
    /// <returns></returns>
    public TreeView tree(TreeView t1, string boot, string chird)
    {
        con.Open();
        DataSet dssuper = dss(boot);
        DataSet dssub = dss(chird);
        DataRow[] rows = dssuper.Tables[0].Select();
        DataRow[] subrows = dssub.Tables[0].Select();
        //if (!IsPostBack)
        //{
        foreach (DataRow row in rows)
        {
            TreeNode nd = new TreeNode();
            nd.Text = row["t_name"].ToString();
            nd.Value = row["t_id"].ToString();
            nd.NavigateUrl = row["t_url"].ToString();
            t1.Nodes.Add(nd);
            foreach (DataRow subrow in subrows)
            {
                TreeNo