DevExpress控件的treeList完整小案例

 1  /// <summary>
 2         /// 加载树
 3         ///tl_TableMaintain是treeList的名称
　　　　　　///对于绑定数据，treeList有自带的，可以不用自己去递归。直接指定KeyFieldName(主键)，ParentFieldName(父键)，以及tag值。
 4         /// </summary>
 5         public void LoadTree()
 6         {
 7             try
 8             {
 9                 this.tl_TableMaintain.Nodes.Clear();//清空所有节点，以便重新加载
10 
11                 ResultBase _arryTableName = Global.Get("System/GetTableMaintain");
12 
13                 if (_arryTableName != null)
14                 {
15                     _snList = (List<erp_dev_table>)JsonConvert.DeserializeObject(_arryTableName.Result, typeof(List<erp_dev_table>));//数据源 snList ，这里获取数据源的方式可自由定义
16 
17                 }
18                 TreeListNode node = tl_TableMaintain.AppendNode(null, -1);
19                 node.SetValue(treeListColumn1, "表结构维护");
20                 LoadTreeCtrl(node, "-1");
21                 TreeListProperty(tl_TableMaintain);//调用方法，设置属性
22             }
23             catch (Exception ex)
24             {}
25         }
26 
27        
28         private void LoadTreeCtrl(TreeListNode pnode, string parentkey)
29         {
30             try
31             {
32                 int index = 0;
33                List<erp_dev_table> dv = _snList.Where(o => o.parent_key.Trim() == parentkey.Trim()).ToList();//根据父级id获取子节点循环加载
34                 foreach (erp_dev_table rv in dv)
35                 {
36                     TreeListNode node = pnode.TreeList.AppendNode(rv.table_key, pnode);
37                     node.SetValue(0, rv.table_name_english);
38                     node.Tag = rv;
39                     LoadTreeCtrl(node, Command.Instance.Getstring(rv.table_key));
40                 }
41             }
42             catch (Exception ex)
43             {
44             }
45         }
46 
47 
48 
49 
50 
51 
52         /// <summary>
53         /// 设置treeList的属性
54         /// </summary>
55         /// <param name="tl"></param>
56         private void TreeListProperty(TreeList tl)
57         {
58             tl.OptionsView.ShowColumns = false;//是否显示选中的行
59             tl.OptionsBehavior.Editable = false;//不可编辑
60             tl.OptionsView.ShowHorzLines = false;//OptionsView提供对树状列表的显示选项,设置水平线是否显示
61             tl.OptionsView.ShowIndicator = false;//节点的指示面板是否显示
62             tl.OptionsView.ShowVertLines = false;//垂直线条是否显示
63             //设置treeList的折叠样式为 +  - 号
64             tl.LookAndFeel.UseDefaultLookAndFeel = false;
65             tl.LookAndFeel.UseWindowsXPTheme = true;
66             tl.OptionsSelection.InvertSelection = true;//聚焦的样式是否只适用于聚焦细胞或所有细胞除了聚焦对象，失去焦点后
67           }
68 
69 

 1  /// <summary>
 2         /// 点击查询，查出相应的
 3         /// </summary>
 4         /// <param name="sender"></param>
 5         /// <param name="e"></param>
 6         private void btn_selectTName_Click(object sender, EventArgs e)
 7         {
 8              tName = txt_name.Text.Trim();
 9             if (!String.IsNullOrEmpty(tName))
10             {
11 
12                 GetTMByName();
13                 btn_saveOrUpdate.Text = "修改";
14             }
15             else
16             {
17                 Global.ShowMeg(Command.MsgType.Warning, "请填写您要查询的表名");
18                 this.txt_name.Focus();
19             }
20         }
21       
22         /// <summary>
23         /// 迭代找到节点
24         /// </summary>
25         /// <param name="node"></param>
26         /// <param name="text"></param>
27         /// <returns></returns>
28         private TreeListNode  forNode(TreeListNode node, string text)
29         {
30             erp_dev_table tableOne = (erp_dev_table)node.Tag;
31             if (tableOne!=null)
32             {
33                 if (tableOne.table_name_english==text)
34                 {
35                     return node;
36                 }
37                 
38             }
39             // 循环父节点下的所有子节点
40             foreach (TreeListNode n in node.Nodes)
41             {
42 
43                 TreeListNode rn = forNode(n, text);
44                 if (rn != null)
45                     return rn;
46               
47             }
48             return null;
49         }
50     
51 
52         public void GetTMByName()
53         {
54             TreeListNode node = forNode(this.tl_TableMaintain.Nodes[0], tName);
55             if (node == null)
56             {
57                 Global.ShowMeg(Command.MsgType.Warning, "您输入有误，当前实体不存在");
58                 return;
59             }
60 
61             if (node.ParentNode.Expanded == false)
62             {
63                 node.ExpandAll();
64 
65             }
66             this.tl_TableMaintain.FocusedNode = node;
67             BangDing();
68             
69 
70         }
71       
 　　　　 public void BangDing()
         {
           
            _currNode = (erp_dev_table)tl_TableMaintain.FocusedNode.Tag;
            erp_dev_table tb = _currNode;
            txt_chinaName.Text = tb.table_name_chain;
            txt_englishName.Text = tb.table_name_english;
            grp_tableDesc.Text = "当前节点为   "+tb.table_name_english;
            if (tb.table_type == 1)
            {
                rd_directory.Checked = true;

            }
            else if (tb.table_type == 2)
            {
                rb_table.Checked = true;

            }
            txt_remark.Text = tb.table_memo;
            med_desc.Text = tb.table_descr;

            grp_tableDesc.Show();
        }