C#界面设计之树目录TreeView的使用

来源：互联网发布：手机变魔术软件蟑螂编辑：程序博客网时间：2024/06/05 10:44

还是先上效果图：
这里写图片描述
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;    }}

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