.Net常用技巧_树控件工具类

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using DevComponents.AdvTree;

namespace MyUtility {
    /// <summary>
    /// 树控件工具类
    /// </summary>
    public class TreeTool {
        ArrayList selectArray = new ArrayList();
        List<Node> list = new List<Node>();
   

        /// <summary>
        /// 选中父节点，其所有子节点也选中
        /// </summary>
        /// <param name="parentNode"></param>
        public ArrayList SetChildChecked(Node parentNode,ArrayList list) {
            for(int i = 0;i<parentNode.Nodes.Count;i++){
                Node node = parentNode.Nodes[i];
                node.Checked = true;
                //list.Add(node);
                if (node.HasChildNodes) {
                    list = SetChildChecked(node, list);
                } else {
                    list.Add(node);
                }
            }
            return list;
        }

        /// <summary>
        /// 选中子节点，其父节点也选中
        /// </summary>
        /// <param name="childNode"></param>
        public void SetParentChecked(Node childNode) {
            if (childNode.Parent != null) {
                childNode.Parent.Checked = true;

                SetParentChecked(childNode.Parent);
            }
        }

        /// <summary>
        /// 取消子节点，其父节点也取消
        /// </summary>
        /// <param name="childNode"></param>
        public void SetParentUnchecked(Node childNode) {
            if (childNode.Parent != null) {
                childNode.Parent.Checked = false;

                SetParentUnchecked(childNode.Parent);
            }
        }

        /// <summary>
        /// 取消父节点，其所有子节点也取消
        /// </summary>
        /// <param name="parentNode"></param>
        public ArrayList CancelChildChecked(Node parentNode, ArrayList list) {
            for(int i=0;i<parentNode.Nodes.Count;i++){
                Node node = parentNode.Nodes[i];
                node.Checked = false;
                list.Remove(node);
                if (node.HasChildNodes) {
                    list = CancelChildChecked(node, list);
                }
            }
            return list;
        }

        /// <summary>
        /// 根据名称模糊查找节点
        /// </summary>
        /// <param name="node">根节点</param>
        /// <param name="text">名称</param>
        /// /// <param name="text">查找类型，0为查找父节点，1为查找子节点</param>
        /// <returns></returns>
        public List<Node> searchNode(Node node, String text,int flag) {

            
            if (flag == 0&&node.Text.Contains(text)) {
                list.Add(node);
            } else if (!node.HasChildNodes && node.Text.Contains(text)) {
                list.Add(node);
            }
            
            if (node.HasChildNodes) {
                for (int i = 0; i < node.Nodes.Count; i++) {
                    list = searchNode(node.Nodes[i], text,flag);
                }

            }

            return list;
        }

        /// <summary>
        /// 根据值精确查找节点
        /// </summary>
        /// <param name="node"></param>
        /// <param name="text"></param>
        /// <returns></returns>
        public List<Node> searchNode_value(Node node, String value) {
            if (node.Tag.ToString().Equals(value) && !node.HasChildNodes) {

                list.Add(node);
            } else if (node.HasChildNodes) {
                for (int i = 0; i < node.Nodes.Count; i++) {
                    list = searchNode_value(node.Nodes[i], value);
                }

            }

            return list;
        }
        /// <summary>
        /// 遍历已选择节点
        /// </summary>
        /// <param name="node"></param>
        /// <param name="perList"></param>
        /// <returns></returns>
        public ArrayList visitSelectNode(Node node) {
         
            if (!node.HasChildNodes) {
                if (node.Checked == true) {
                    selectArray.Add(node);
                } else {//取消父节点
                    SetParentUnchecked(node);
                }
            } else {
                node.Checked = true;
                for (int i = 0; i < node.Nodes.Count; i++) {
                    selectArray = visitSelectNode(node.Nodes[i]);
                   
                }

            }
            return selectArray;
        }


        /// <summary>
        /// 遍历节点，并且选择
        /// </summary>
        /// <param name="node"></param>
        /// <param name="perList"></param>
        /// <returns></returns>
        public void visitNode(Node node, ArrayList list) {
            if (!node.HasChildNodes) {
                if (list.Count != 0) {
                    foreach (String id in list) {
                        if (node.Checked == true) {
                            node.Checked = false;
                        }
                        if (node.Tag.ToString().Equals(id)) {
                            node.Checked = true;
                            break;
                        }
                    }
                } else {
                    node.Checked = false;
                }

            } else {
                for (int i = 0; i < node.Nodes.Count; i++) {
                    visitNode(node.Nodes[i], list);
                }
            }
        }

        
    }
}