ADO Net C# Tutorial

using System;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
public class ListBoxBindingTable : System.Windows.Forms.Form
{
  private System.Windows.Forms.ListBox employeeList;
  private System.ComponentModel.Container components = null;
  public ListBoxBindingTable()
  {
    InitializeComponent();
    string connectionString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;";
    string commandString = "Select ID, FirstName from Employee";
    SqlDataAdapter dataAdapter = new SqlDataAdapter(commandString, connectionString);
    DataSet dataSet = new DataSet();
    dataAdapter.Fill(dataSet,"Employee");
    DataTable dataTable = dataSet.Tables[0];
    employeeList.DataSource= dataTable;
    employeeList.DisplayMember = "Employee";
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.employeeList = new System.Windows.Forms.ListBox();
    this.SuspendLayout();
    this.employeeList.Location = new System.Drawing.Point(8, 8);
    this.employeeList.Name = "employeeList";
    this.employeeList.Size = new System.Drawing.Size(272, 95);
    this.employeeList.TabIndex = 0;
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(292, 133);
    this.Controls.AddRange(new System.Windows.Forms.Control[] {this.employeeList});
    this.Name = "ListBoxBindingTable";
    this.Text = "ListBoxBindingTable";
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new ListBoxBindingTable());
  }
}