GUI Windows Form C#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
namespace ListView
{
  public class Form1 : System.Windows.Forms.Form
  {
    private System.Windows.Forms.RadioButton rdoLarge;
    private System.Windows.Forms.RadioButton rdoSmall;
    private System.Windows.Forms.RadioButton rdoList;
    private System.Windows.Forms.RadioButton rdoDetails;
    private System.Windows.Forms.GroupBox groupBox1;
    private System.Windows.Forms.ImageList ilLarge;
    private System.Windows.Forms.ImageList ilSmall;
    private System.Windows.Forms.ListView lwFilesAndFolders;
    private System.Windows.Forms.Label lblCurrentPath;
    public Form1()
    {
      InitializeComponent();
      CreateHeadersAndFillListView();
      PaintListView();
    }
    private void InitializeComponent()
    {
//      System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
      this.groupBox1 = new System.Windows.Forms.GroupBox();
      this.rdoDetails = new System.Windows.Forms.RadioButton();
      this.rdoList = new System.Windows.Forms.RadioButton();
      this.rdoSmall = new System.Windows.Forms.RadioButton();
      this.rdoLarge = new System.Windows.Forms.RadioButton();
      this.lblCurrentPath = new System.Windows.Forms.Label();
      this.ilLarge = new System.Windows.Forms.ImageList();
      this.ilSmall = new System.Windows.Forms.ImageList();
      this.lwFilesAndFolders = new System.Windows.Forms.ListView();
      this.groupBox1.SuspendLayout();
      this.SuspendLayout();
      this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {this.rdoDetails,
                                                                            this.rdoList,
                                                                            this.rdoSmall,
                                                                            this.rdoLarge});
      this.groupBox1.Location = new System.Drawing.Point(424, 32);
      this.groupBox1.Name = "groupBox1";
      this.groupBox1.Size = new System.Drawing.Size(120, 128);
      this.groupBox1.TabIndex = 2;
      this.groupBox1.TabStop = false;
      this.groupBox1.Text = "View mode";
      // 
      // rdoDetails
      // 
      this.rdoDetails.Checked = true;
      this.rdoDetails.Location = new System.Drawing.Point(8, 96);
      this.rdoDetails.Name = "rdoDetails";
      this.rdoDetails.Size = new System.Drawing.Size(104, 16);
      this.rdoDetails.TabIndex = 3;
      this.rdoDetails.TabStop = true;
      this.rdoDetails.Text = "Details";
      this.rdoDetails.CheckedChanged += new System.EventHandler(this.rdoDetails_CheckedChanged);
      // 
      // rdoList
      // 
      this.rdoList.Location = new System.Drawing.Point(8, 72);
      this.rdoList.Name = "rdoList";
      this.rdoList.Size = new System.Drawing.Size(104, 16);
      this.rdoList.TabIndex = 2;
      this.rdoList.Text = "List";
      this.rdoList.CheckedChanged += new System.EventHandler(this.rdoList_CheckedChanged);
      // 
      // rdoSmall
      // 
      this.rdoSmall.Location = new System.Drawing.Point(8, 48);
      this.rdoSmall.Name = "rdoSmall";
      this.rdoSmall.Size = new System.Drawing.Size(104, 16);
      this.rdoSmall.TabIndex = 1;
      this.rdoSmall.Text = "SmallIcon";
      this.rdoSmall.CheckedChanged += new System.EventHandler(this.rdoSmall_CheckedChanged);
      // 
      // rdoLarge
      // 
      this.rdoLarge.Location = new System.Drawing.Point(8, 24);
      this.rdoLarge.Name = "rdoLarge";
      this.rdoLarge.Size = new System.Drawing.Size(96, 16);
      this.rdoLarge.TabIndex = 0;
      this.rdoLarge.Text = "LargeIcon";
      this.rdoLarge.CheckedChanged += new System.EventHandler(this.rdoLarge_CheckedChanged);
      // 
      // ilLarge
      // 
      this.ilLarge.ColorDepth = System.Windows.Forms.ColorDepth.Depth8Bit;
      this.ilLarge.ImageSize = new System.Drawing.Size(32, 32);
//      this.ilLarge.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("ilLarge.ImageStream")));
      this.ilLarge.TransparentColor = System.Drawing.Color.Transparent;
      // 
      // ilSmall
      // 
      this.ilSmall.ColorDepth = System.Windows.Forms.ColorDepth.Depth8Bit;
      this.ilSmall.ImageSize = new System.Drawing.Size(16, 16);
//      this.ilSmall.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("ilSmall.ImageStream")));
      this.ilSmall.TransparentColor = System.Drawing.Color.Transparent;
      // 
      // lwFilesAndFolders
      // 
      this.lwFilesAndFolders.LargeImageList = this.ilLarge;
      this.lwFilesAndFolders.Location = new System.Drawing.Point(16, 32);
      this.lwFilesAndFolders.MultiSelect = false;
      this.lwFilesAndFolders.Name = "lwFilesAndFolders";
      this.lwFilesAndFolders.Size = new System.Drawing.Size(400, 216);
      this.lwFilesAndFolders.SmallImageList = this.ilSmall;
      this.lwFilesAndFolders.TabIndex = 0;
      this.lwFilesAndFolders.View = System.Windows.Forms.View.List;
      // 
      // Form1
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(552, 293);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {this.groupBox1, this.lwFilesAndFolders});
      this.Name = "Form1";
      this.Text = "ListView";
      this.groupBox1.ResumeLayout(false);
      this.ResumeLayout(false);
    }
    static void Main() 
    {
      Application.Run(new Form1());
    }
    private void CreateHeadersAndFillListView()
    {
      ColumnHeader colHead;
      colHead = new ColumnHeader();
      colHead.Text = "Filename";
      this.lwFilesAndFolders.Columns.Add(colHead); 
      
      colHead = new ColumnHeader();
      colHead.Text = "Size";
      this.lwFilesAndFolders.Columns.Add(colHead);
      
      colHead = new ColumnHeader();
      colHead.Text = "Last accessed";
      this.lwFilesAndFolders.Columns.Add(colHead); 
    }
    private void PaintListView()
    {
      ListViewItem lvi;
      ListViewItem.ListViewSubItem lvsi;
      this.lwFilesAndFolders.Items.Clear();
      this.lwFilesAndFolders.BeginUpdate();
      lvi = new ListViewItem();
      lvi.Text = "A"; 
      lvi.ImageIndex = 0; 
      lvi.Tag = "tag";
      lvsi = new ListViewItem.ListViewSubItem();
      lvsi.Text = "4"; 
      lvi.SubItems.Add(lvsi); 
          
      lvsi = new ListViewItem.ListViewSubItem();
      lvsi.Text = "C"; 
      lvi.SubItems.Add(lvsi); 
      this.lwFilesAndFolders.Items.Add(lvi);
      this.lwFilesAndFolders.EndUpdate();
      this.lwFilesAndFolders.View = View.Details;
    }
    private void rdoLarge_CheckedChanged(object sender, System.EventArgs e)
    {
      RadioButton rdb = (RadioButton)sender;
      if (rdb.Checked)
        this.lwFilesAndFolders.View = View.LargeIcon;
    }
    private void rdoList_CheckedChanged(object sender, System.EventArgs e)
    {
      RadioButton rdb = (RadioButton)sender;
      if (rdb.Checked)
        this.lwFilesAndFolders.View = View.List;
    }
    private void rdoSmall_CheckedChanged(object sender, System.EventArgs e)
    {
      RadioButton rdb = (RadioButton)sender;
      if (rdb.Checked)
        this.lwFilesAndFolders.View = View.SmallIcon;
    }
    private void rdoDetails_CheckedChanged(object sender, System.EventArgs e)
    {
      RadioButton rdb = (RadioButton)sender;
      if (rdb.Checked)
        this.lwFilesAndFolders.View = View.Details;
    }
  }
}