Dev TreeList基本用法

public partial class treelist_shijian : DevExpress.XtraEditors.XtraForm 
    { 
        public treelist_shijian() 
        { 
            InitializeComponent(); 
            ShuJu(); 
        } 
        //读取数据库绑定到treeList1中 
        public void ShuJu() 
        { 
            SqlConnection conn = new SqlConnection("server=(local);database=DEV_Test;Integrated Security=true;"); 
             
            SqlCommand comm = new SqlCommand("select * from Table_treelist", conn);//select后面要写“*”否则树形结构的效果出不来 
             conn.Open(); 
            SqlDataReader reader = comm.ExecuteReader(); 
            DataTable dt = new DataTable(); 
            dt.Load(reader); 
            this.treeList1.DataSource = dt; 
             
            this.treeList1.KeyFieldName = "编号"; 
            treeList1.ParentFieldName = "父类编号"; 
            treeList1.Columns[0].Caption = "公司"; 
            conn.Close(); 
 
            //显示复选框 
            treeList1.OptionsView.ShowCheckBoxes = true; 
        } 
 
        //选择某一节点时,该节点的子节点全部选择  取消某一节点时,该节点的子节点全部取消选择 
        private void SetCheckedChildNodes(TreeListNode node, CheckState check) 
        { 
            for (int i = 0; i < node.Nodes.Count; i++) 
            { 
                node.Nodes[i].CheckState = check; 
                SetCheckedChildNodes(node.Nodes[i], check); 
            } 
        } 
 
         
        // 某节点的子节点全部选择时,该节点选择   某节点的子节点未全部选择时,该节点不选择 
        private void SetCheckedParentNodes(TreeListNode node, CheckState check) 
        { 
            if (node.ParentNode != null) 
            { 
 
                CheckState parentCheckState = node.ParentNode.CheckState; 
                CheckState nodeCheckState; 
                for (int i = 0; i < node.ParentNode.Nodes.Count; i++) 
                { 
                    nodeCheckState = (CheckState)node.ParentNode.Nodes[i].CheckState; 
                    if (!check.Equals(nodeCheckState))//只要任意一个与其选中状态不一样即父节点状态不全选 
                    { 
                        parentCheckState = CheckState.Unchecked; 
                        break; 
                    } 
                    parentCheckState = check;//否则（该节点的兄弟节点选中状态都相同），则父节点选中状态为该节点的选中状态 
                } 
 
                node.ParentNode.CheckState = parentCheckState; 
                SetCheckedParentNodes(node.ParentNode, check);//遍历上级节点 
            } 
        } 
 
       //触发选择节点事件 
       private void treeList1_AfterCheckNode(object sender, DevExpress.XtraTreeList.NodeEventArgs e) 
       { 
           SetCheckedChildNodes(e.Node, e.Node.CheckState); 
           SetCheckedParentNodes(e.Node, e.Node.CheckState); 
       } 
 
       private List<string> lstCheckedOfficeID = new List<string>();//选择局ID集合 
        
       // 获取选择状态的数据主键ID集合 
       private void GetCheckedOfficeID(TreeListNode parentNode) 
       { 
           if (parentNode.Nodes.Count == 0) 
           { 
               return;//递归终止 
           } 
 
           foreach (TreeListNode node in parentNode.Nodes) 
           { 
               if (node.CheckState == CheckState.Checked) 
               { 
                   DataRowView drv = treeList1.GetDataRecordByNode(node) as DataRowView; 
                    if (drv != null) 
                    { 
                        string OfficeID = (string)drv["名称"]; 
                        lstCheckedOfficeID.Add(OfficeID); 
                    } 
 
                } 
                GetCheckedOfficeID(node); 
            } 
        } 
 
        //查看哪些节点被选中 
        private void simpleButton1_Click(object sender, EventArgs e) 
        { 
            this.lstCheckedOfficeID.Clear(); 
 
            if (treeList1.Nodes.Count > 0) 
            { 
                foreach (TreeListNode root in treeList1.Nodes) 
                { 
                    GetCheckedOfficeID(root); 
                } 
            } 
 
            string idStr = string.Empty; 
            foreach (string id in lstCheckedOfficeID) 
            { 
                idStr += id + " "; 
            } 
            MessageBox.Show(idStr); 
        } 
         
    } 
}