TreeView 操作应用

1 在窗体Form_Load里面初始化TreeView

    /**//// <summary>
        /// 初始化TreeView
        /// </summary>
        private void InitTreeview()
        {
            try
            {
                treeView1.CheckBoxes = true;
                treeView1.Nodes.Clear();
                dt_menu=new DataTable("dt_rightTable");                
                dt_menu.Columns.Add("ID", typeof(String));
                dt_menu.Columns.Add("RightName", typeof(String));
                dt_menu.Columns.Add("ParentID", typeof(String));    

                DataRow dr;
                增加权限数据表#region 增加权限数据表
                资源管理#region    资源管理
                dr=dt_menu.NewRow();            
                dr["ID"]="1";
                dr["RightName"]="资源管理";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="11";
                dr["RightName"]="查询";
                dr["ParentID"]="1";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="12";
                dr["RightName"]="增加";
                dr["ParentID"]="1";
                dt_menu.Rows.Add(dr);


                dr=dt_menu.NewRow();            
                dr["ID"]="13";
                dr["RightName"]="修改";
                dr["ParentID"]="1";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="14";
                dr["RightName"]="删除";
                dr["ParentID"]="1";
                dt_menu.Rows.Add(dr);
                #endregion
                资源中心#region    资源中心
                dr=dt_menu.NewRow();            
                dr["ID"]="2";
                dr["RightName"]="资源中心";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="21";
                dr["RightName"]="查询";
                dr["ParentID"]="2";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="22";
                dr["RightName"]="增加";
                dr["ParentID"]="2";
                dt_menu.Rows.Add(dr);

                #endregion            
                决策支持#region 决策支持
                dr=dt_menu.NewRow();            
                dr["ID"]="3";
                dr["RightName"]="决策支持";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);
                地图导航#region    地图导航
                dr=dt_menu.NewRow();            
                dr["ID"]="31";
                dr["RightName"]="地图导航";
                dr["ParentID"]="3";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="311";
                dr["RightName"]="编辑";
                dr["ParentID"]="31";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="312";
                dr["RightName"]="查询";
                dr["ParentID"]="31";
                dt_menu.Rows.Add(dr);
                #endregion

                数据报表#region 数据报表
                dr=dt_menu.NewRow();            
                dr["ID"]="32";
                dr["RightName"]="数据报表";
                dr["ParentID"]="3";
                dt_menu.Rows.Add(dr);
                旅游参观人数统计#region    旅游参观人数统计
                dr=dt_menu.NewRow();            
                dr["ID"]="321";
                dr["RightName"]="旅游参观人数统计";
                dr["ParentID"]="32";
                dt_menu.Rows.Add(dr);
                #endregion


                社会无力维修文物专项补助经费统计表#region    社会无力维修文物专项补助经费统计表
                dr=dt_menu.NewRow();            
                dr["ID"]="322";
                dr["RightName"]="社会无力维修文物专项补助经费统计表";
                dr["ParentID"]="32";
                dt_menu.Rows.Add(dr);
                #endregion

                古村落、古建筑保护维修情况统计表#region    古村落、古建筑保护维修情况统计表
                dr=dt_menu.NewRow();            
                dr["ID"]="323";
                dr["RightName"]="古村落、古建筑保护维修情况统计表";
                dr["ParentID"]="32";
                dt_menu.Rows.Add(dr);
                #endregion


                文物保护专项经费使用情况报表#region    文物保护专项经费使用情况报表
                dr=dt_menu.NewRow();            
                dr["ID"]="324";
                dr["RightName"]="文物保护专项经费使用情况报表";
                dr["ParentID"]="32";
                dt_menu.Rows.Add(dr);
                #endregion


                举报问题统计表#region    举报问题统计表
                dr=dt_menu.NewRow();            
                dr["ID"]="325";
                dr["RightName"]="举报问题统计表";
                dr["ParentID"]="32";
                dt_menu.Rows.Add(dr);
                #endregion

                发文管理#region    发文管理
                dr=dt_menu.NewRow();            
                dr["ID"]="326";
                dr["RightName"]="发文管理";
                dr["ParentID"]="32";
                dt_menu.Rows.Add(dr);
                #endregion


                收文管理#region    收文管理
                dr=dt_menu.NewRow();            
                dr["ID"]="327";
                dr["RightName"]="收文管理";
                dr["ParentID"]="32";
                dt_menu.Rows.Add(dr);
                #endregion





                #endregion


                #endregion
                工作信息#region  工作信息
                dr=dt_menu.NewRow();            
                dr["ID"]="4";
                dr["RightName"]="工作信息";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="41";
                dr["RightName"]="查询";
                dr["ParentID"]="4";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="42";
                dr["RightName"]="增加";
                dr["ParentID"]="4";
                dt_menu.Rows.Add(dr);


                dr=dt_menu.NewRow();            
                dr["ID"]="43";
                dr["RightName"]="修改";
                dr["ParentID"]="4";
                dt_menu.Rows.Add(dr);


                dr=dt_menu.NewRow();            
                dr["ID"]="44";
                dr["RightName"]="删除";
                dr["ParentID"]="4";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="45";
                dr["RightName"]="摸板维护";
                dr["ParentID"]="4";
                dt_menu.Rows.Add(dr);



                #endregion
                工作计划#region    工作计划
                dr=dt_menu.NewRow();            
                dr["ID"]="5";
                dr["RightName"]="工作计划";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="51";
                dr["RightName"]="查询";
                dr["ParentID"]="5";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="52";
                dr["RightName"]="删除";
                dr["ParentID"]="5";
                dt_menu.Rows.Add(dr);
                #endregion
                工作动态#region 工作动态
                dr=dt_menu.NewRow();            
                dr["ID"]="6";
                dr["RightName"]="工作动态";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="61";
                dr["RightName"]="查询";
                dr["ParentID"]="6";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="62";
                dr["RightName"]="删除";
                dr["ParentID"]="6";
                dt_menu.Rows.Add(dr);
                #endregion
                科研项目#region    科研项目
                dr=dt_menu.NewRow();            
                dr["ID"]="7";
                dr["RightName"]="科研项目";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);
                建筑评估#region    建筑评估
                dr=dt_menu.NewRow();            
                dr["ID"]="71";
                dr["RightName"]="建筑评估";
                dr["ParentID"]="7";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="711";
                dr["RightName"]="查看";
                dr["ParentID"]="71";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="712";
                dr["RightName"]="编辑";
                dr["ParentID"]="71";
                dt_menu.Rows.Add(dr);
                #endregion
                完好率评测#region   完好率评测
                dr=dt_menu.NewRow();            
                dr["ID"]="72";
                dr["RightName"]="完好率评测";
                dr["ParentID"]="7";
                dt_menu.Rows.Add(dr);    
            
                dr=dt_menu.NewRow();            
                dr["ID"]="721";
                dr["RightName"]="查看";
                dr["ParentID"]="72";
                dt_menu.Rows.Add(dr);    

                dr=dt_menu.NewRow();            
                dr["ID"]="722";
                dr["RightName"]="编辑";
                dr["ParentID"]="72";
                dt_menu.Rows.Add(dr);    
                #endregion


                #endregion
                文保档案#region    文保档案
                dr=dt_menu.NewRow();            
                dr["ID"]="8";
                dr["RightName"]="文保档案";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);


                记录档案#region    记录档案
                dr=dt_menu.NewRow();            
                dr["ID"]="81";
                dr["RightName"]="记录档案";
                dr["ParentID"]="8";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="811";
                dr["RightName"]="查看";
                dr["ParentID"]="81";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="812";
                dr["RightName"]="维护";
                dr["ParentID"]="81";
                dt_menu.Rows.Add(dr);


                dr=dt_menu.NewRow();            
                dr["ID"]="813";
                dr["RightName"]="删除";
                dr["ParentID"]="81";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="814";
                dr["RightName"]="摸板管理";
                dr["ParentID"]="81";
                dt_menu.Rows.Add(dr);
                #endregion

                台帐管理#region 台帐管理
                dr=dt_menu.NewRow();            
                dr["ID"]="82";
                dr["RightName"]="台帐管理";
                dr["ParentID"]="8";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="821";
                dr["RightName"]="查看";
                dr["ParentID"]="82";
                dt_menu.Rows.Add(dr);

                dr=dt_menu.NewRow();            
                dr["ID"]="822";
                dr["RightName"]="维护";
                dr["ParentID"]="82";
                dt_menu.Rows.Add(dr);


                dr=dt_menu.NewRow();            
                dr["ID"]="823";
                dr["RightName"]="删除";
                dr["ParentID"]="82";
                dt_menu.Rows.Add(dr);



                #endregion

                #region    
                #endregion

                #endregion
                系统管理#region 系统管理
                dr=dt_menu.NewRow();            
                dr["ID"]="9";
                dr["RightName"]="系统管理";
                dr["ParentID"]="0";
                dt_menu.Rows.Add(dr);    
            
                dr=dt_menu.NewRow();            
                dr["ID"]="91";
                dr["RightName"]="查看";
                dr["ParentID"]="9";
                dt_menu.Rows.Add(dr);    

                dr=dt_menu.NewRow();            
                dr["ID"]="92";
                dr["RightName"]="编辑";
                dr["ParentID"]="9";
                dt_menu.Rows.Add(dr);    
                #endregion
                #endregion
                AddTree(0, (TreeNode)null);
                             
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message);
            }
        }

其中用到方法：

    /**//// <summary>
        ///  递归添加树的节点
        /// </summary>
        /// <param name="ParentID">父节点ID</param>
        /// <param name="pNode">节点</param>
        public void AddTree(int ParentID,TreeNode pNode) 
        {
            DataView dvTree = new DataView(dt_menu);
            dvTree.RowFilter =  "[ParentID] = " + ParentID;
            foreach(DataRowView Row in dvTree) 
            {
                TreeNode Node=new TreeNode() ;

                TreeNode node_temp=new TreeNode();

                if(pNode == null) 
                {
                    //增加根节点
                    node_temp.Text =Row["RightName"].ToString();
                    node_temp.Tag =Row["ID"].ToString();
                    treeView1.Nodes.Add(node_temp);
                    AddTree(Int32.Parse(Row["ID"].ToString()),node_temp);    //再次递归
                }
                else
                {
                    node_temp.Text =Row["RightName"].ToString();
                    node_temp.Tag =Row["ID"].ToString();
                    pNode.Nodes.Add(node_temp);
                    AddTree(Int32.Parse(Row["ID"].ToString()),node_temp);    //再次递归
                }
            }            
        }

在TreeView的AfterCheck事件里面编写如下代码：

    private void treeView1_AfterCheck(object sender, System.Windows.Forms.TreeViewEventArgs e)
        {
            //单击了treeView控件所触发的事件
            //MessageBox.Show(e.Node.Index.ToString());
            //如果夫节点下面有子节点则全部选中
            if(e.Action != TreeViewAction.Unknown)
            {
                if(e.Node.Nodes.Count > 0)
                {
                    this.CheckAllChildNodes(e.Node, e.Node.Checked);
                }
                //如果选中子节点同时选中父节点
                if(e.Node.Checked == true)
                {
                    this.selectParent(e.Node);
                }
                //如果取消子选择子节点，而且当所有本及子节点未选中时，取消父级节点
                if(e.Node.Checked == false)
                {
                    this.cancelParent(e.Node);
                
                }
            }                
        }

使用到的方法：

    public void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked)
        {
            foreach(TreeNode node in treeNode.Nodes)
            {
                node.Checked = nodeChecked;
                if(node.Nodes.Count > 0)
                {
                    this.CheckAllChildNodes(node, nodeChecked);
                }
            }
        }

        //取消上级节点
        private void cancelParent(TreeNode node)
        {
            if(node.Parent != null)
            {
                bool isCheck = false;
                foreach(TreeNode n in node.Parent.Nodes)
                {
                    if(n.Checked == true)
                        isCheck = true;
                }
                if(!isCheck)
                    node.Parent.Checked = false;
            }
        }
        
        //设置选中父节点
        private void selectParent(TreeNode node)
        {
            if(node.Parent != null && node.Parent.Checked == false)
            {
                node.Parent.Checked = true;
                if(node.Parent.Parent != null)
                    this.selectParent(node.Parent);
            }
        }

取消TreeView里面所有的钩

    private void simpleButton4_Click(object sender, System.EventArgs e)
        {
            System.Windows.Forms.TreeNodeCollection nodes=treeView1.Nodes;
            ClearSelectTree(nodes);
        }    //清除所有打勾选项
        private void ClearSelectTree(System.Windows.Forms.TreeNodeCollection nodes)
        {            
            foreach(System.Windows.Forms.TreeNode node in nodes) 
            {  
                node.Checked =false;                
                ClearSelectTree(node.Nodes); //递归查找                 
            } 
        }

给每个TreeView里面节点的Tag加str_right  这里str_right是全局变量

            GetAllNode(treeView1.Nodes);

遍历所有的节点：

    /**//// <summary>
        /// 遍历treeview  调用GetAllNode(treeView1.Nodes)
        /// </summary>
        /// <param name="nodes"></param>
        private void GetAllNode(System.Windows.Forms.TreeNodeCollection nodes) 
        { 
            foreach(System.Windows.Forms.TreeNode node in nodes) 
            {  
                if (node.Checked)
                {
                    if (str_right!="")
                    {
                        str_right+=";"+node.Tag.ToString();
                    }
                    else
                    {
                        str_right=node.Tag.ToString();
                    }                    
                }
                GetAllNode(node.Nodes); //递归查找 
                
            } 
        } 

下面判断是否打钩

treeView1.Nodes[Convert.ToInt32(ch_array[0].ToString())-1].Nodes[Convert.ToInt32(ch_array[1].ToString())-1].Checked=true;