Use Tree to display xml document : XDocument « XML LINQ « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. XML LINQ
3. XDocument

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

    public class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            XElement root = XElement.Load("Employees.xml");
            TreeNode rootNode = new TreeNode(root.Name.LocalName);
            treeView1.Nodes.Add(rootNode);
            foreach(XElement employee in root.Elements())
            {
                TreeNode employeeNode = new TreeNode("Employee ID :" + employee.Attribute("employeeid").Value);
                rootNode.Nodes.Add(employeeNode);
                if (employee.HasElements)
                {
                    foreach(XElement employeechild in employee.Descendants())
                    {
                        TreeNode childNode = new TreeNode(employeechild.Value);
                        employeeNode.Nodes.Add(childNode);
                    }
                }
            }
        }

        private void InitializeComponent()
        {
            this.treeView1 = new System.Windows.Forms.TreeView();
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // treeView1
            // 
            this.treeView1.Dock = System.Windows.Forms.DockStyle.Top;
            this.treeView1.Location = new System.Drawing.Point(0, 0);
            this.treeView1.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
            this.treeView1.Name = "treeView1";
            this.treeView1.Size = new System.Drawing.Size(389, 278);
            this.treeView1.TabIndex = 0;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(145, 286);
            this.button1.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(100, 28);
            this.button1.TabIndex = 1;
            this.button1.Text = "Load Tree";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(389, 327);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.treeView1);
            this.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.Margin = new System.Windows.Forms.Padding(4, 4, 4, 4);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);

        }

        private System.Windows.Forms.TreeView treeView1;
        private System.Windows.Forms.Button button1;
    }

    static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }