C#界面设计之树目录TreeView的使用

还是先上效果图：

主要代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace TreeDemo
{
    public partial class frmTree : Form
    {
        public frmTree()
        {
            InitializeComponent();
        }

        private List<string> GetAllNodeInfo(TreeView tvDept)
        {
            List<string> lst = new List<string>();
            for (int i = 0; i < tvDept.Nodes.Count; i++)
            {
                string od = string.Empty;
                od = string.Format("Level：{0}，Nodes：{1}，Name：{2}，Text：{3}\r\n",
                    tvDept.Nodes[i].Level.ToString().PadLeft(3), tvDept.Nodes[i].Nodes.Count.ToString().PadLeft(3),
                    tvDept.Nodes[i].Name, tvDept.Nodes[i].Text);
                lst.Add(od);

                if (tvDept.Nodes[i].Nodes.Count > 0)
                {
                    GetAllNodeInfoSub(tvDept.Nodes[i], lst);
                }
            }

            return lst;
        }
        private void GetAllNodeInfoSub(TreeNode nodeRoot, List<string> lst)
        {
            for (int i = 0; i < nodeRoot.Nodes.Count; i++)
            {
                string od = string.Empty;
                od = string.Format("Level：{0}，Nodes：{1}，Name：{2}，Text：{3}\r\n",
                    nodeRoot.Nodes[i].Level.ToString().PadLeft(3), nodeRoot.Nodes[i].Nodes.Count.ToString().PadLeft(3),
                    nodeRoot.Nodes[i].Name, nodeRoot.Nodes[i].Text);
                lst.Add(od);

                if (nodeRoot.Nodes[i].Nodes.Count > 0)
                {
                    GetAllNodeInfoSub(nodeRoot.Nodes[i], lst);
                }
            }
        }

        private void frmTree_Load(object sender, EventArgs e)
        {
            treeView1.ExpandAll();
            treeView1.HideSelection = false;
            treeView1.CheckBoxes = checkBox1.Checked;
            treeView1.ShowLines = checkBox2.Checked;
            treeView1.ShowRootLines = checkBox3.Checked;
        }
        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (e.Node != null)
            {
                //节点信息
                string strNodeInfo = string.Empty;
                strNodeInfo += string.Format("Name：{0}\r\n", e.Node.Name);
                strNodeInfo += string.Format("Text：{0}\r\n", e.Node.Text);
                strNodeInfo += string.Format("Nodes：{0}\r\n", e.Node.Nodes.Count.ToString());
                strNodeInfo += string.Format("Level：{0}\r\n", e.Node.Level);
                txtNodeInfo.Text = strNodeInfo;
                //显示窗体
                switch (e.Node.Text)
                {
                    case "ndForm1":
                        (new Form1()).ShowDialog();
                        break;
                    case "ndForm2":
                        (new Form2()).ShowDialog();
                        break;
                    case "ndForm3":
                        (new Form3()).ShowDialog();
                        break;
                }
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            TreeNode tn = new TreeNode();
            tn.Name = tn.Text = "tn" + DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString("D3");
            treeView1.Nodes.Add(tn);
            System.Threading.Thread.Sleep(1);
        }
        private void button2_Click(object sender, EventArgs e)
        {
            if (treeView1.SelectedNode == null)
            {
                return;
            }
            else
            {
                if (treeView1.SelectedNode.Parent == null)
                {
                    button1_Click(null, null);
                }
                else
                {
                    TreeNode tn = new TreeNode();
                    tn.Name = tn.Text = "tn" + DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString("D3");
                    treeView1.SelectedNode.Parent.Nodes.Add(tn);
                    System.Threading.Thread.Sleep(1);
                }
            }
        }
        private void button3_Click(object sender, EventArgs e)
        {
            if (treeView1.SelectedNode == null)
            {
                return;
            }
            else
            {
                TreeNode tn = new TreeNode();
                tn.Name = tn.Text = "tn" + DateTime.Now.ToString("yyMMddhhmmss") + DateTime.Now.Millisecond.ToString("D3");
                treeView1.SelectedNode.Nodes.Add(tn);
                System.Threading.Thread.Sleep(1);
                treeView1.ExpandAll();
            }
        }
        private void button4_Click(object sender, EventArgs e)
        {
            if (treeView1.SelectedNode != null)
            {
                treeView1.Nodes.Remove(treeView1.SelectedNode);
            }
        }
        private void button5_Click(object sender, EventArgs e)
        {
            if (treeView1.SelectedNode != null)
            {
                treeView1.SelectedNode.Nodes.Clear();
            }
        }
        private void button7_Click(object sender, EventArgs e)
        {
            treeView1.ExpandAll();
        }
        private void button8_Click(object sender, EventArgs e)
        {
            treeView1.CollapseAll();
        }
        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            treeView1.CheckBoxes = checkBox1.Checked;
            treeView1.ExpandAll();
        }
        private void checkBox2_CheckedChanged(object sender, EventArgs e)
        {
            treeView1.ShowLines = checkBox2.Checked;
            treeView1.ExpandAll();
        }
        private void checkBox3_CheckedChanged(object sender, EventArgs e)
        {
            treeView1.ShowRootLines = checkBox3.Checked;
            treeView1.ExpandAll();
        }
        private void button6_Click(object sender, EventArgs e)
        {
            List<string> lst = GetAllNodeInfo(treeView1);
            txtNodeInfo.Text = string.Empty;

            for (int i = 0; i < lst.Count; i++)
            {
                txtNodeInfo.Text += lst[i];
                Application.DoEvents();
            }
        }

    }
}

namespace TreeDemo
{
    partial class frmTree
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            System.Windows.Forms.TreeNode treeNode1 = new System.Windows.Forms.TreeNode("节点1");
            System.Windows.Forms.TreeNode treeNode2 = new System.Windows.Forms.TreeNode("节点4");
            System.Windows.Forms.TreeNode treeNode3 = new System.Windows.Forms.TreeNode("节点5");
            System.Windows.Forms.TreeNode treeNode4 = new System.Windows.Forms.TreeNode("节点3", new System.Windows.Forms.TreeNode[] {
            treeNode2,
            treeNode3});
            System.Windows.Forms.TreeNode treeNode5 = new System.Windows.Forms.TreeNode("节点2", new System.Windows.Forms.TreeNode[] {
            treeNode4});
            System.Windows.Forms.TreeNode treeNode6 = new System.Windows.Forms.TreeNode("节点0", new System.Windows.Forms.TreeNode[] {
            treeNode1,
            treeNode5});
            System.Windows.Forms.TreeNode treeNode7 = new System.Windows.Forms.TreeNode("节点7");
            System.Windows.Forms.TreeNode treeNode8 = new System.Windows.Forms.TreeNode("节点8");
            System.Windows.Forms.TreeNode treeNode9 = new System.Windows.Forms.TreeNode("节点9");
            System.Windows.Forms.TreeNode treeNode10 = new System.Windows.Forms.TreeNode("节点10");
            System.Windows.Forms.TreeNode treeNode11 = new System.Windows.Forms.TreeNode("节点6", new System.Windows.Forms.TreeNode[] {
            treeNode7,
            treeNode8,
            treeNode9,
            treeNode10});
            System.Windows.Forms.TreeNode treeNode12 = new System.Windows.Forms.TreeNode("ndForm1");
            System.Windows.Forms.TreeNode treeNode13 = new System.Windows.Forms.TreeNode("ndForm2");
            System.Windows.Forms.TreeNode treeNode14 = new System.Windows.Forms.TreeNode("ndForm3");
            System.Windows.Forms.TreeNode treeNode15 = new System.Windows.Forms.TreeNode("导航", new System.Windows.Forms.TreeNode[] {
            treeNode12,
            treeNode13,
            treeNode14});
            this.treeView1 = new System.Windows.Forms.TreeView();
            this.lblInfo = new System.Windows.Forms.Label();
            this.txtNodeInfo = new System.Windows.Forms.TextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.button3 = new System.Windows.Forms.Button();
            this.button4 = new System.Windows.Forms.Button();
            this.button5 = new System.Windows.Forms.Button();
            this.button7 = new System.Windows.Forms.Button();
            this.button8 = new System.Windows.Forms.Button();
            this.checkBox1 = new System.Windows.Forms.CheckBox();
            this.checkBox2 = new System.Windows.Forms.CheckBox();
            this.checkBox3 = new System.Windows.Forms.CheckBox();
            this.button6 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // treeView1
            // 
            this.treeView1.BackColor = System.Drawing.SystemColors.Window;
            this.treeView1.Location = new System.Drawing.Point(12, 12);
            this.treeView1.Name = "treeView1";
            treeNode1.Name = "节点1";
            treeNode1.Text = "节点1";
            treeNode2.Name = "节点4";
            treeNode2.Text = "节点4";
            treeNode3.Name = "节点5";
            treeNode3.Text = "节点5";
            treeNode4.Name = "节点3";
            treeNode4.Text = "节点3";
            treeNode5.Name = "节点2";
            treeNode5.Text = "节点2";
            treeNode6.Name = "节点0";
            treeNode6.Text = "节点0";
            treeNode7.Name = "节点7";
            treeNode7.Text = "节点7";
            treeNode8.Name = "节点8";
            treeNode8.Text = "节点8";
            treeNode9.Name = "节点9";
            treeNode9.Text = "节点9";
            treeNode10.Name = "节点10";
            treeNode10.Text = "节点10";
            treeNode11.Name = "节点6";
            treeNode11.Text = "节点6";
            treeNode12.Name = "ndForm1";
            treeNode12.Text = "ndForm1";
            treeNode13.Name = "ndForm2";
            treeNode13.Text = "ndForm2";
            treeNode14.Name = "ndForm3";
            treeNode14.Text = "ndForm3";
            treeNode15.Name = "节点11";
            treeNode15.Text = "导航";
            this.treeView1.Nodes.AddRange(new System.Windows.Forms.TreeNode[] {
            treeNode6,
            treeNode11,
            treeNode15});
            this.treeView1.Size = new System.Drawing.Size(288, 449);
            this.treeView1.TabIndex = 0;
            this.treeView1.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeView1_AfterSelect);
            // 
            // lblInfo
            // 
            this.lblInfo.Location = new System.Drawing.Point(306, 12);
            this.lblInfo.Name = "lblInfo";
            this.lblInfo.Size = new System.Drawing.Size(474, 21);
            this.lblInfo.TabIndex = 2;
            this.lblInfo.Text = "选中的节点信息";
            // 
            // txtNodeInfo
            // 
            this.txtNodeInfo.Location = new System.Drawing.Point(306, 36);
            this.txtNodeInfo.Multiline = true;
            this.txtNodeInfo.Name = "txtNodeInfo";
            this.txtNodeInfo.ReadOnly = true;
            this.txtNodeInfo.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
            this.txtNodeInfo.Size = new System.Drawing.Size(474, 226);
            this.txtNodeInfo.TabIndex = 3;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(306, 268);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 4;
            this.button1.Text = "添加根";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(387, 268);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(75, 23);
            this.button2.TabIndex = 5;
            this.button2.Text = "添加同级";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // button3
            // 
            this.button3.Location = new System.Drawing.Point(468, 268);
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(75, 23);
            this.button3.TabIndex = 6;
            this.button3.Text = "添加子级";
            this.button3.UseVisualStyleBackColor = true;
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // button4
            // 
            this.button4.Location = new System.Drawing.Point(549, 268);
            this.button4.Name = "button4";
            this.button4.Size = new System.Drawing.Size(75, 23);
            this.button4.TabIndex = 7;
            this.button4.Text = "删除选中";
            this.button4.UseVisualStyleBackColor = true;
            this.button4.Click += new System.EventHandler(this.button4_Click);
            // 
            // button5
            // 
            this.button5.Location = new System.Drawing.Point(630, 268);
            this.button5.Name = "button5";
            this.button5.Size = new System.Drawing.Size(150, 23);
            this.button5.TabIndex = 8;
            this.button5.Text = "删除选中子级";
            this.button5.UseVisualStyleBackColor = true;
            this.button5.Click += new System.EventHandler(this.button5_Click);
            // 
            // button7
            // 
            this.button7.Location = new System.Drawing.Point(306, 297);
            this.button7.Name = "button7";
            this.button7.Size = new System.Drawing.Size(75, 23);
            this.button7.TabIndex = 4;
            this.button7.Text = "展开";
            this.button7.UseVisualStyleBackColor = true;
            this.button7.Click += new System.EventHandler(this.button7_Click);
            // 
            // button8
            // 
            this.button8.Location = new System.Drawing.Point(387, 297);
            this.button8.Name = "button8";
            this.button8.Size = new System.Drawing.Size(75, 23);
            this.button8.TabIndex = 5;
            this.button8.Text = "关闭";
            this.button8.UseVisualStyleBackColor = true;
            this.button8.Click += new System.EventHandler(this.button8_Click);
            // 
            // checkBox1
            // 
            this.checkBox1.AutoSize = true;
            this.checkBox1.Location = new System.Drawing.Point(306, 336);
            this.checkBox1.Name = "checkBox1";
            this.checkBox1.Size = new System.Drawing.Size(78, 16);
            this.checkBox1.TabIndex = 9;
            this.checkBox1.Text = "CheckBoxs";
            this.checkBox1.UseVisualStyleBackColor = true;
            this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
            // 
            // checkBox2
            // 
            this.checkBox2.AutoSize = true;
            this.checkBox2.Location = new System.Drawing.Point(306, 358);
            this.checkBox2.Name = "checkBox2";
            this.checkBox2.Size = new System.Drawing.Size(78, 16);
            this.checkBox2.TabIndex = 10;
            this.checkBox2.Text = "ShowLines";
            this.checkBox2.UseVisualStyleBackColor = true;
            this.checkBox2.CheckedChanged += new System.EventHandler(this.checkBox2_CheckedChanged);
            // 
            // checkBox3
            // 
            this.checkBox3.AutoSize = true;
            this.checkBox3.Location = new System.Drawing.Point(306, 380);
            this.checkBox3.Name = "checkBox3";
            this.checkBox3.Size = new System.Drawing.Size(78, 16);
            this.checkBox3.TabIndex = 11;
            this.checkBox3.Text = "ShowLines";
            this.checkBox3.UseVisualStyleBackColor = true;
            this.checkBox3.CheckedChanged += new System.EventHandler(this.checkBox3_CheckedChanged);
            // 
            // button6
            // 
            this.button6.Location = new System.Drawing.Point(468, 297);
            this.button6.Name = "button6";
            this.button6.Size = new System.Drawing.Size(75, 23);
            this.button6.TabIndex = 12;
            this.button6.Text = "遍历";
            this.button6.UseVisualStyleBackColor = true;
            this.button6.Click += new System.EventHandler(this.button6_Click);
            // 
            // frmTree
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(784, 462);
            this.Controls.Add(this.button6);
            this.Controls.Add(this.checkBox3);
            this.Controls.Add(this.checkBox2);
            this.Controls.Add(this.checkBox1);
            this.Controls.Add(this.button5);
            this.Controls.Add(this.button4);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.button8);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button7);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.txtNodeInfo);
            this.Controls.Add(this.lblInfo);
            this.Controls.Add(this.treeView1);
            this.MaximizeBox = false;
            this.MaximumSize = new System.Drawing.Size(800, 500);
            this.MinimizeBox = false;
            this.MinimumSize = new System.Drawing.Size(800, 500);
            this.Name = "frmTree";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "frmTree.cs";
            this.Load += new System.EventHandler(this.frmTree_Load);
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.TreeView treeView1;
        private System.Windows.Forms.Label lblInfo;
        private System.Windows.Forms.TextBox txtNodeInfo;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button3;
        private System.Windows.Forms.Button button4;
        private System.Windows.Forms.Button button5;
        private System.Windows.Forms.Button button7;
        private System.Windows.Forms.Button button8;
        private System.Windows.Forms.CheckBox checkBox1;
        private System.Windows.Forms.CheckBox checkBox2;
        private System.Windows.Forms.CheckBox checkBox3;
        private System.Windows.Forms.Button button6;
    }
}