我想使用多个表来生成动态的treeview,效果如图三，代码如下所示

在第二次与第三次的代码中，代码出现重复，中间只是改了表名、列名

多个表之间，是否也可以实现递归呢，不管它的表名与列名是否相同？

    protected DataSet BindDate(string select)
    {
        Database db = DatabaseFactory.CreateDatabase();
        DbCommand cmd = db.GetSqlStringCommand(select);
        DataSet ds = db.ExecuteDataSet(cmd);
        return ds;
    }

    public void BindTree()//第一次
    {
        DataSet ds = BindDate("select * from tree");
        int count = ds.Tables[0].Rows.Count;
        for (int i = 0; i < count; i++)
        {
            TreeNode tn = new TreeNode();
            tn.Text = ds.Tables[0].Rows[i]["Name"].ToString();
            tn.Value = ds.Tables[0].Rows[i]["ID"].ToString();
            BindRoot("select * from Root where ID='" + int.Parse(ds.Tables[0].Rows[i]["ID"].ToString()) + "'", tn);
            trvList.Nodes.Add(tn);
        }
    }
    public void BindRoot(string sql, TreeNode TN)//第二次
    {
        DataSet ds = BindDate(sql);
        int count = ds.Tables[0].Rows.Count;
        for (int i = 0; i < count; i++)
        {
            TreeNode tn = new TreeNode();
            tn.Text = ds.Tables[0].Rows[i]["Name"].ToString();
            tn.Value = ds.Tables[0].Rows[i]["RootID"].ToString();
            BindParent("select * from Parent where RootID='" + int.Parse(ds.Tables[0].Rows[i]["RootID"].ToString()) + "'", tn);
            TN.ChildNodes.Add(tn);
        }
    }
    public void BindParent(string sql, TreeNode TN)//第三次
    {
        DataSet ds = BindDate(sql);
        int count = ds.Tables[0].Rows.Count;
        for (int i = 0; i < count; i++)
        {
            TreeNode tn = new TreeNode();
            tn.Text = ds.Tables[0].Rows[i]["Name"].ToString();
            tn.Value = ds.Tables[0].Rows[i]["RootID"].ToString();
            TN.ChildNodes.Add(tn);
        }
    }
}

文件下载：http://www.cnblogs.com/Files/VincentLuo/SolutionTreeView.rar

 static void Main(string[] args)
        {
            DirectoryInfo di = new DirectoryInfo(@"F:\wwwroot\eBayName\eBayCategory Two\Jewelry & Watches");

            FileInfo[] fi = di.GetFiles();
            int length = fi.Length;

            for (int i = 0;i< length; i++)
            {
                ParameterizedThreadStart para = new ParameterizedThreadStart(IsReg);            
                Thread trd = new Thread(para);              
                string txtFileName = fi[i].FullName;
                //Thread.Sleep(1000);
                trd.Start(txtFileName);              
            }
            Console.ReadLine();
}
static void IsReg(object name)
        {          
            Console.WriteLine("TXT文件名： "+name);//输出文件名
        }