XML LINQ C# Tutorial

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;
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            XElement root = XElement.Load("employees.xml");
            var employees = from item in root.Descendants("employee")
                            select new {
                             EmployeeID = item.Attribute("employeeid").Value,
                             FirstName = item.Element("firstname").Value,
                             LastName = item.Element("lastname").Value,
                             HomePhone = item.Element("homephone").Value,
                             Notes = item.Element("notes").Value
                            };
            dataGridView1.DataSource = employees.ToArray();
        }
    }
    partial class Form1
    {
        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.dataGridView1 = new System.Windows.Forms.DataGridView();
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
            this.SuspendLayout();
            // 
            this.button1.Location = new System.Drawing.Point(78, 12);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(232, 25);
            this.button1.TabIndex = 0;
            this.button1.Text = "Project XML as Collection";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            this.dataGridView1.Dock = System.Windows.Forms.DockStyle.Bottom;
            this.dataGridView1.Location = new System.Drawing.Point(0, 46);
            this.dataGridView1.Name = "dataGridView1";
            this.dataGridView1.Size = new System.Drawing.Size(389, 150);
            this.dataGridView1.TabIndex = 1;
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(389, 196);
            this.Controls.Add(this.dataGridView1);
            this.Controls.Add(this.button1);
            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";
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
            this.ResumeLayout(false);
        }
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.DataGridView dataGridView1;
    }
    static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }