ADO Database C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
    public Form1() {
        InitializeComponent();
    }
    private void getData_Click(object sender, EventArgs e) {
        Item[] items = new Item[] { new Item ( "One" ) , new Item ( "Two" ) , new Item ( "Three" ) };
        dataGridView1.AutoGenerateColumns = true;
        dataGridView1.DataSource = items;
    }
    protected class Item {
        public Item(string text) {
            m_text = text;
        }
        public string Text {
            get { return m_text; }
        }
        private string m_text;
    }
    private void InitializeComponent() {
        this.dataGridView1 = new System.Windows.Forms.DataGridView();
        this.getData = new System.Windows.Forms.Button();
        ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
        this.SuspendLayout();
        this.dataGridView1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                    | System.Windows.Forms.AnchorStyles.Left)
                    | System.Windows.Forms.AnchorStyles.Right)));
        this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
        this.dataGridView1.Location = new System.Drawing.Point(12, 12);
        this.dataGridView1.Name = "dataGridView1";
        this.dataGridView1.Size = new System.Drawing.Size(268, 223);
        this.dataGridView1.TabIndex = 0;
        this.getData.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
        this.getData.Location = new System.Drawing.Point(204, 242);
        this.getData.Name = "getData";
        this.getData.Size = new System.Drawing.Size(75, 23);
        this.getData.TabIndex = 1;
        this.getData.Text = "Get Data";
        this.getData.UseVisualStyleBackColor = true;
        this.getData.Click += new System.EventHandler(this.getData_Click);
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(292, 271);
        this.Controls.Add(this.getData);
        this.Controls.Add(this.dataGridView1);
        ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
        this.ResumeLayout(false);
    }
    private System.Windows.Forms.DataGridView dataGridView1;
    private System.Windows.Forms.Button getData;
    [STAThread]
    static void Main() {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }
}