TreeView(C#)无限目录树代码片段

    #region 绑定客户树

    protected void bindTreeView()

    {

        TreeView1.Nodes.Clear();

        string userid = Session["UserID"].ToString();

        string sqlwr = new SY_ADMINUSER().GetUserIDListByLoginUser(userid, "CUSTOMERSERVICE", false);

        DataTable dt = Maticsoft.DBUtility.DbHelperOra.Query("Select PARENTID,CUSTOMERID,CUSTOMERSHORT,CUSTOMERSERVICE from CU_CUSTOMER where ISDELETE='0' " + sqlwr + " order by CUSTOMERSHORT ").Tables[0];

        //定义临时树节点  

        TreeNode tmpNd;



        //特殊处理

        foreach (DataRow dr in dt.Rows)

        {

            DataRow[] drs = dt.Select("CUSTOMERID='" + dr["PARENTID"] + "'");

            if (drs.Length == 0) //无上级节点

            {

                dr["PARENTID"] = "0";

            }

        }

        dt.AcceptChanges();



        //从DataTable中得到所有父节点为null的DataRow形成的数组  

        DataRow[] rows = dt.Select("PARENTID='0'");

        //遍历根节点数组  

        foreach (DataRow row in rows)

        {

            tmpNd = new TreeNode();

            //给根节点赋值  

            tmpNd.Value = row["CUSTOMERID"].ToString();

            tmpNd.Text = row["CUSTOMERSHORT"].ToString();

            tmpNd.Expanded = true;

            //将节点加入到树中  

            TreeView1.Nodes.Add(tmpNd);

            AddTree(dt, TreeView1, tmpNd, row["CUSTOMERID"].ToString());

        }

    }



    public void AddTree(DataTable dt, TreeView tv, TreeNode pNode, string CUSTOMERID)

    {

        DataRow[] rows = dt.Select("PARENTID='" + CUSTOMERID + "'");

        TreeNode tmpNd;

        foreach (DataRow row in rows)

        {

            tmpNd = new TreeNode();

            //给根节点赋值  

            tmpNd.Value = row["CUSTOMERID"].ToString();

            tmpNd.Text = row["CUSTOMERSHORT"].ToString();

            tmpNd.Expanded = true;

            pNode.ChildNodes.Add(tmpNd);

            //将节点加入到树中  

            //TreeView1.Nodes.Add(pNode);

            AddTree(dt, TreeView1, tmpNd, row["CUSTOMERID"].ToString());

        }

    }

    #endregion