Control/MyTreeView.cs

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using System;
using System.Windows.Forms;
using Microsoft.VisualBasic;
using Microsoft.VisualBasic.CompilerServices;
using Common;

/// <summary>
/// 树控件
/// </summary>
namespace Control
{
    public class MyTreeView : TreeView
    {
        /// <summary>
        /// 获取第一级的节点
        /// </summary>
        /// <param name="text">节点文本</param>
        /// <returns></returns>
        public TreeNode getNode_byLevelOne(string text)
        {
            foreach (TreeNode node in this.Nodes)
            {
                if (node.Text.Trim().ToLower() == text.Trim().ToLower())
                {
                    return node;
                }
            }

            return null;
        }

        /// <summary>
        /// 获取所有子节点
        /// </summary>
        /// <param name="ParentNode">父节点</param>
        /// <returns></returns>
        public MyTreeNodeCollection getNodes(TreeNode ParentNode)
        {
            MyTreeNodeCollection Nodes = new MyTreeNodeCollection();
            AppendNodes(Nodes, ParentNode);
            return Nodes;
        }

        /// <summary>
        /// 获取所有节点
        /// </summary>
        /// <returns></returns>
        public MyTreeNodeCollection getNodes()
        {
            MyTreeNodeCollection Nodes = new MyTreeNodeCollection();
            foreach (TreeNode node in this.Nodes)
            {
                Nodes.Add(node);
                AppendNodes(Nodes, node);
            }
            return Nodes;
        }

        /// <summary>
        /// 追加节点