效果：
1 DataTable dtArea = new DataTable(); 2 3 private void Form1_Load(object sender, EventArgs e) 4 { 5 Node node1 = new Node(); 6 node1.Name = "0"; 7 node1.Text = "所有区域"; 8 node1.DataKey = null; 9 node1.TagString = "0"; 10 advTree1.Nodes.Add(node1); 11 12 dtArea = new DataTable(); 13 BaseServer.BaseInforClient bll = new BaseServer.BaseInforClient(); 14 15 Dt_areasInfo model = new Dt_areasInfo() { Category = EnumMakeNumber.dt_areas }; 16 BaseDtoOfDataSetymujubN2 dto = bll.QueryData(BaseServer.ExternalStructEnumOperateObj.查询, model); 17 18 if (dto.Code == 200) 19 { 20 dtArea = dto.Data.Tables[0]; 21 BindTree(dtArea, node1); 22 } 23 //展开 24 advTree1.ExpandAll(); 25 //关闭 26 //advTree1.CollapseAll(); 27 } 28 public void BindTree(DataTable dt, Node node) 29 { 30 DataView dv = dt.DefaultView; 31 dv.RowFilter = " pid=" + node.Name; 32 DataTable dtnew = dv.ToTable(); 33 if (dtnew.Rows.Count > 0) 34 foreach (DataRow item in dtnew.Rows) 35 { 36 Node nodec = new Node(); 37 nodec.Name = item["id"].ToString(); 38 nodec.Text = "(" + item["id"].ToString() + ")" + item["name"].ToString(); 39 nodec.DataKey = item; 40 nodec.TagString = item["sort"].ToString(); 41 node.Nodes.Add(nodec); 42 BindTree(dt, nodec); 43 } 44 } 45 46 private void advTree1_AfterSelect(object sender, EventArgs e) 47 { 48 if (advTree1.SelectedNode != null) 49 { 50 MessageBox.Show(advTree1.SelectedNode.Text); 51 } 52 }