C#里的treeview控件如何能绑定数据库里的数据

应用程序，窗体里拖放一个TreeView控件，想把数据库里的数据在这个控件里显示出来

 

  TREEVIEW控件是Winfrom窗体里的 不是ASP．NET里的TREEVIEW

 

代码如下：

 

CREATE TABLE CateTable (
      [ID] [int] IDENTITY (1, 1) NOT NULL ,
       [CateName] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NOT NULL ,
       [RootID] [int] NOT NULL ,
       [ParentID] [int] NOT NULL
)
GO

存储过程：
CREATE PROCEDURE CateTable_GetList AS
BEGIN
       Select
              CateID,
              CateName,
              RootID,
              ParentID
       From
              CateTable
       Order By
              CateID,RootID,ParentID
END

代码：
        private void MainForm_Load(object sender, EventArgs e)
        {
            //从数据库中读取数据
            SqlConnection con = new SqlConnection(ConnString.ConStr);
            SqlCommand cmd = new SqlCommand("CateTable_GetList", con);
            cmd.CommandType = CommandType.StoredProcedure;
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataSet ds = new DataSet();
            try
            {
             sda.Fill(ds);
            }
            catch
            {
            }
            finally
            {
             cmd = null;
             con.Close();
            }
            //往TreeView中添加树节点
            //添加根节点
            TreeNode tn = new TreeNode();
            tn.Text = "种类";
            tn.Name = "0";//Name作为ID
            tn.Tag = "0";//Tag作为RootID
            tn.ImageIndex = 0;
            tn.SelectedImageIndex = 0;
            tv.Nodes.Add(tn);//该TreeView命名为tv
            tv.SelectedNode = tv.TopNode;
            //把其他节点加上去
            if (ds != null)
            {
                foreach (DataRow dr in ds.Tables[0].Rows)
                {
                    tn = new TreeNode();
                    tn.Text = dr["CateName"].ToString();
                    tn.Name = dr["CateID"].ToString();//Name作为CateID
                    tn.Tag = dr["RootID"].ToString();//Tag作为RootID
                    tn.ImageIndex = 1;
                    tn.SelectedImageIndex = 1;
              //判断是否为主节点
                    if (dr["CateID"].ToString() == dr["RootID"].ToString())
                    {
               //主节点
                        tv.SelectedNode = tv.TopNode;
                    }
                    else
                    {
               //其他节点
                        if (tv.SelectedNode.Name != dr["ParentID"].ToString())
                        {
                            TreeNode[] tn_temp = tv.Nodes.Find(dr["ParentID"].ToString(), true);
                            if (tn_temp.Length > 0)
                            {
                                tv.SelectedNode = tn_temp[0];
                            }
                        }
                    }
                    tv.SelectedNode.Nodes.Add(tn);
                }
                tv.ExpandAll();//展开TreeView
                tv.SelectedNode = tv.TopNode;
            }
        }