Add ListView column and insert ListView rows : ListView « GUI Windows Form « C# / C Sharp

1. C# / C Sharp
2. GUI Windows Form
3. ListView

Add ListView column and insert ListView rows

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.Collections.Specialized.StringCollection folderCol;    
    
    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();

      // Init ListView and folder collection
      folderCol = new System.Collections.Specialized.StringCollection();
      CreateHeadersAndFillListView();
      PaintListView(@"C:\");
      folderCol.Add(@"C:\");

      this.lwFilesAndFolders.ItemActivate += new System.EventHandler(this.lwFilesAndFolders_ItemActivate);
    }
    private void InitializeComponent()
    {
//      System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
      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.SuspendLayout();

      this.lblCurrentPath.Location = new System.Drawing.Point(16, 8);
      this.lblCurrentPath.Name = "lblCurrentPath";
      this.lblCurrentPath.Size = new System.Drawing.Size(528, 16);
      this.lblCurrentPath.TabIndex = 3;
      // 
      // 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.lblCurrentPath,  this.lwFilesAndFolders});
      this.Name = "Form1";
      this.Text = "ListView";
      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(string root)
    {
      try
      {
        ListViewItem lvi;
        ListViewItem.ListViewSubItem lvsi;

        this.lblCurrentPath.Text = root + "    (Double click to display the path name)";

        System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(root);
      
        DirectoryInfo[] dirs = dir.GetDirectories();
        FileInfo[] files = dir.GetFiles();

        this.lwFilesAndFolders.Items.Clear();

        this.lwFilesAndFolders.BeginUpdate();

        foreach (System.IO.DirectoryInfo di in dirs)
        {
          lvi = new ListViewItem();
          lvi.Text = di.Name; 
          //lvi.ImageIndex = 0;
          lvi.Tag = di.FullName; 

          lvsi = new ListViewItem.ListViewSubItem();
          lvsi.Text = "sub item"; 
          lvi.SubItems.Add(lvsi); 

          lvsi = new ListViewItem.ListViewSubItem();
          lvsi.Text = di.LastAccessTime.ToString(); 
          lvi.SubItems.Add(lvsi); 

          this.lwFilesAndFolders.Items.Add(lvi);
        }
        this.lwFilesAndFolders.EndUpdate();
      }
      catch (System.Exception err)
      {
        MessageBox.Show("Error: " + err.Message);
      }
      
      this.lwFilesAndFolders.View = View.Details;
    }

    private void lwFilesAndFolders_ItemActivate(object sender, System.EventArgs e)
    {
      System.Windows.Forms.ListView lw = (System.Windows.Forms.ListView)sender;
      string filename = lw.SelectedItems[0].Tag.ToString();
            
            Console.WriteLine(filename);
    }
  }
}


           
       

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