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.IO;
namespace ListView
{
public partial class Form1 : Form
{
private System.Collections.Specialized.StringCollection folderCol;
public Form1()
{
InitializeComponent();
// Init ListView and folder collection
folderCol = new System.Collections.Specialized.StringCollection();
CreateHeadersAndFillListView();
PaintListView(@"C:");
folderCol.Add(@"C:");
}
private void CreateHeadersAndFillListView()
{
ColumnHeader colHead;
// First header
colHead = new ColumnHeader();
colHead.Text = "Filename";
listViewFilesAndFolders.Columns.Add(colHead); // Insert the header
// Second header
colHead = new ColumnHeader();
colHead.Text = "Size";
listViewFilesAndFolders.Columns.Add(colHead); // Insert the header
// Third header
colHead = new ColumnHeader();
colHead.Text = "Last accessed";
listViewFilesAndFolders.Columns.Add(colHead); // Insert the header
}
private void PaintListView(string root)
{
try
{
// Two local variables that are used to create the items to insert
ListViewItem lvi;
ListViewItem.ListViewSubItem lvsi;
// If there’s no root folder, we can’t insert anything.
if (string.IsNullOrEmpty(root))
return;
// Get information about the root folder.
DirectoryInfo dir = new DirectoryInfo(root);
// Retrieve the files and folders from the root folder.
DirectoryInfo[] dirs = dir.GetDirectories(); // Folders
FileInfo[] files = dir.GetFiles(); // Files
// Clear the ListView. Note that we call the Clear method on the
// Items collection rather than on the ListView itself.
// The Clear method of the ListView remove everything, including column
// headers, and we only want to remove the items from the view.
listViewFilesAndFolders.Items.Clear();
// Set the label with the current path.
labelCurrentPath.Text = root;
// Lock the ListView for updates.
listViewFilesAndFolders.BeginUpdate();
// Loop through all folders in the root folder and insert them.
foreach (DirectoryInfo di in dirs)
{
// Create the main ListViewItem.
lvi = new ListViewItem();
lvi.Text = di.Name; // Folder name
lvi.ImageIndex = 0; // The folder icon has index 0
lvi.Tag = di.FullName; // Set the tag to the qualified path of the
// folder
// Create the two ListViewSubItems.
lvsi = new ListViewItem.ListViewSubItem();
lvsi.Text = ""; // Size—a folder has no size and so this column
// is empty
lvi.SubItems.Add(lvsi); // Add the subitem to the ListViewItem
lvsi = new ListViewItem.ListViewSubItem();
lvsi.Text = di.LastAccessTime.ToString(); // Last accessed column
lvi.SubItems.Add(lvsi); // Add the subitem to the ListViewItem.
// Add the ListViewItem to the Items collection of the ListView.
listViewFilesAndFolders.Items.Add(lvi);
}
// Loop through all the files in the root folder.
foreach (FileInfo fi in files)
{
// Create the main ListViewItem.
lvi = new ListViewItem();
lvi.Text = fi.Name; // Filename
lvi.ImageIndex = 1; // The icon we use to represent a folder has
// index 1.
lvi.Tag = fi.FullName; // Set the tag to the qualified path of the
// file.
// Create the two subitems.
lvsi = new ListViewItem.ListViewSubItem();
lvsi.Text = fi.Length.ToString(); // Length of the file
lvi.SubItems.Add(lvsi); // Add to the SubItems collection
lvsi = new ListViewItem.ListViewSubItem();
lvsi.Text = fi.LastAccessTime.ToString(); // Last Accessed Column
lvi.SubItems.Add(lvsi); // Add to the SubItems collection
// Add the item to the Items collection of the ListView.
listViewFilesAndFolders.Items.Add(lvi);
}
// Unlock the ListView. The items that have been inserted will now
// be displayed.
listViewFilesAndFolders.EndUpdate();
}
catch (System.Exception err)
{
MessageBox.Show("Error: " + err.Message);
}
}
private void listViewFilesAndFolders_ItemActivate(object sender, EventArgs e)
{
// Cast the sender to a ListView and get the tag of the first selected
// item.
System.Windows.Forms.ListView lw = (System.Windows.Forms.ListView)sender;
string filename = lw.SelectedItems[0].Tag.ToString();
if (lw.SelectedItems[0].ImageIndex != 0)
{
try
{
// Attempt to run the file.
System.Diagnostics.Process.Start(filename);
}
catch
{
// If the attempt fails we simply exit the method.
return;
}
}
else
{
// Insert the items.
PaintListView(filename);
folderCol.Add(filename);
}
}
private void buttonBack_Click(object sender, EventArgs e)
{
if (folderCol.Count > 1)
{
PaintListView(folderCol[folderCol.Count - 2].ToString());
folderCol.RemoveAt(folderCol.Count - 1);
}
else
PaintListView(folderCol[0].ToString());
}
private void radioButtonLargeIcon_CheckedChanged(object sender, EventArgs e)
{
RadioButton rdb = (RadioButton)sender;
if (rdb.Checked)
this.listViewFilesAndFolders.View = View.LargeIcon;
}
private void radioButtonSmallIcon_CheckedChanged(object sender, EventArgs e)
{
RadioButton rdb = (RadioButton)sender;
if (rdb.Checked)
this.listViewFilesAndFolders.View = View.SmallIcon;
}
private void radioButtonList_CheckedChanged(object sender, EventArgs e)
{
RadioButton rdb = (RadioButton)sender;
if (rdb.Checked)
this.listViewFilesAndFolders.View = View.List;
}
private void radioButtonDetails_CheckedChanged(object sender, EventArgs e)
{
RadioButton rdb = (RadioButton)sender;
if (rdb.Checked)
this.listViewFilesAndFolders.View = View.Details;
}
private void radioButtonTile_CheckedChanged(object sender, EventArgs e)
{
RadioButton rdb = (RadioButton)sender;
if (rdb.Checked)
this.listViewFilesAndFolders.View = View.Tile;
}
}
}
