插入三层treeview代码

  #region treetView加载

        private void treeViewLoad()

        {

            DataView dv = navds.tbSiteKind.AsDataView();

            treeView1.Nodes.Clear();

            //foreach (DataRowView row in dv)

            //{

            //    TreeNode tn = new TreeNode();

            //    tn.Text = row[0].ToString();

            //    treeView1.Nodes.Add(tn);

            //    addChildNode(tn);

            //}

        }

        private void addChildNode(TreeNode tn)

        {

            DataView dvc = navds.site.AsDataView();

            string filt = "siteKind like '%" + tn.Text.ToString()+"'";

            dvc.RowFilter = filt;

            //参考：

            //http://tech.it168.com/KnowledgeBase/Articles/0/5/8/058be1cc2a1e95f0dd1e7f9ac71f9d70.htm

            //http://blog.csdn.net/luols/article/details/5539573

            DataTable dt1 = dvc.ToTable(true, "site");

            foreach (DataRow datav in dt1.Rows)

            {

                TreeNode node = new TreeNode();

                node.Text = datav["site"].ToString();

                //node.Tag=datav["rowid"].ToString();

                tn.Nodes.Add(node);

                addMimNode(node);

            }

        }

        private void addMimNode(TreeNode node)

        {

            DataView dv2 = navds.site.AsDataView();

            string filt2 = "site like '%" + node.Text.ToString() + "'";

            dv2.RowFilter = filt2;

            foreach (DataRowView dvr in dv2)

            {

                TreeNode nd = new TreeNode();

                nd.Text = dvr["cannle"].ToString();

                nd.Tag = dvr["siteurl"].ToString();

                node.Nodes.Add(nd);

            }

        }

        #endregion

插入三层的treeview代码。