FileManager

using System;
using System.Drawing;
using System.IO;
using System.Net;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using Microsoft.Win32;
using System.Diagnostics;

namespace FileManager
{
    public partial class MainForm : Form
    {
        private ImageList imageList;
        private ListView listView;
        private TreeView treeView1;
        private SplitContainer splitContainer1;
        private WebBrowser webBrowser1;
        private TextBox textBox1;
        private Button button1;
        private Button button2;
        private MenuStrip menuStrip1;
        private ContextMenuStrip contextMenuStrip1;
        private System.ComponentModel.IContainer components;
        private TreeView treeView;

        static class Program
        {
            [STAThread]
            static void Main()
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new MainForm());
            }
        }

        public MainForm()
        {
            InitializeComponent();

            // Initialize the file system tree view
            treeView = new TreeView();
            treeView.Dock = DockStyle.Left;
            treeView.AfterSelect += TreeView_AfterSelect;
            Controls.Add(treeView);

            // Initialize the file list view
            listView = new ListView();
            listView.Dock = DockStyle.Fill;
            listView.View = View.Details;
            listView.FullRowSelect = true;
            listView.GridLines = true;
            listView.Columns.Add("Name", 250);
            listView.Columns.Add("Size", 100);
            listView.Columns.Add("Type", 100);
            listView.Columns.Add("Modified", 150);
            Controls.Add(listView);

            // Initialize the image list with system icons
            imageList = new ImageList();
            imageList.ColorDepth = ColorDepth.Depth32Bit;
            imageList.ImageSize = new Size(16, 16);
            imageList.Images.Add(GetIcon("shell32.dll", 3)); // Desktop
            imageList.Images.Add(GetIcon("shell32.dll", 4)); // My Computer
            imageList.Images.Add(GetIcon("shell32.dll", 9)); // Drive
            imageList.Images.Add(GetIcon("shell32.dll", 15)); // Folder
            listView.SmallImageList = imageList;

            // Populate the file system tree view with drives
            foreach (DriveInfo drive in DriveInfo.GetDrives())
            {
                if (drive.IsReady)
                {
                    TreeNode driveNode = new TreeNode(drive.Name, 2, 2);
                    driveNode.Tag = drive.RootDirectory.FullName;
                    treeView.Nodes.Add(driveNode);
                    driveNode.Nodes.Add(new TreeNode()); // dummy node
                }
            }
        }

        private void TreeView_AfterSelect(object sender, TreeViewEventArgs e)
        {
            string path = e.Node.Tag as string;
            if (path == null)
                return;

            try
            {
                // Clear the list view
                listView.Items.Clear();

                // Populate the list view with files and folders
                DirectoryInfo dir = new DirectoryInfo(path);
                foreach (DirectoryInfo subdir in dir.GetDirectories())
                {
                    ListViewItem item = new ListViewItem(subdir.Name, 3);
                    item.SubItems.Add("");
                    item.SubItems.Add("Folder");
                    item.SubItems.Add(subdir.LastWriteTime.ToString());
                    item.Tag = subdir.FullName;
                    listView.Items.Add(item);
                }
                foreach (FileInfo file in dir.GetFiles())
                {
                    ListViewItem item = new ListViewItem(file.Name, GetImageIndex(file.FullName));
                    item.SubItems.Add(file.Length.ToString("#,##0"));
                    item.SubItems.Add(file.Extension.ToUpper().Substring(1));
                    item.SubItems.Add(file.LastWriteTime.ToString());
                    item.Tag = file.FullName;
                    listView.Items.Add(item);
                }

                // Resize the list view columns
                listView.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
 private int GetImageIndex(string path)
    {
        SHFILEINFO shfi = new SHFILEINFO();
        uint flags = SHGFI_SYSICONINDEX | SHGFI_SMALLICON;
        IntPtr hImg = SHGetFileInfo(path, 0, ref shfi, (uint)Marshal.SizeOf(shfi), flags);
        if (hImg != IntPtr.Zero)
        {
            return shfi.iIcon;
        }
        else
        {
            return -1;
        }
    }

    private Icon GetIcon(string fileName, int index)
    {
        SHFILEINFO shfi = new SHFILEINFO();
        uint flags = SHGFI_SYSICONINDEX | SHGFI_SMALLICON;
        SHGetFileInfo(fileName, 0, ref shfi, (uint)Marshal.SizeOf(shfi), flags);
        IntPtr hIcon = ImageList_GetIcon(imageList.Handle, shfi.iIcon, ILD_TRANSPARENT);
        return Icon.FromHandle(hIcon);
    }

    private void MainForm_Load(object sender, EventArgs e)
    {
        // Set the window title
        RegistryKey key = Registry.ClassesRoot.OpenSubKey("*\\shell\\open\\command");
        if (key != null)
        {
            string command = key.GetValue("").ToString();
            int start = command.IndexOf('"', 0) + 1;
            int end = command.IndexOf('"', start);
            string appName = command.Substring(start, end - start);
            Text = Path.GetFileNameWithoutExtension(appName);
            key.Close();
        }
    }

    private void listView_MouseDoubleClick(object sender, MouseEventArgs e)
    {
        if (listView.SelectedItems.Count > 0)
        {
            string path = listView.SelectedItems[0].Tag as string;
            if (path != null)
            {
                try
                {
                    if (Directory.Exists(path))
                    {
                        // Expand the tree view node
                        TreeNode node = FindNodeByTag(treeView.Nodes, path);
                        if (node != null)
                        {
                            node.Expand();
                            treeView.SelectedNode = node;
                        }
                    }
                    else if (File.Exists(path))
                    {
                        // Open the file with the default program
                        Process.Start(path);
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }
    }

    private TreeNode FindNodeByTag(TreeNodeCollection nodes, string tag)
    {
        foreach (TreeNode node in nodes)
        {
            if (node.Tag != null && node.Tag.ToString() == tag)
                return node;
            else
            {
                TreeNode subNode = FindNodeByTag(node.Nodes, tag);
                if (subNode != null)
                    return subNode;
            }
        }
        return null;
    }

    private const uint SHGFI_ICON = 0x000000100;
    private const uint SHGFI_SMALLICON = 0x000000001;
    private const uint SHGFI_SYSICONINDEX = 0x000004000;

    [DllImport("shell32.dll", CharSet = CharSet.Unicode)]
    private static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbSizeFileInfo, uint uFlags);

    [DllImport("comctl32.dll")]
    private static extern IntPtr ImageList_GetIcon(IntPtr himl, int i, uint flags);

    [StructLayout(LayoutKind.Sequential)]
    private struct SHFILEINFO
    {
        public IntPtr hIcon;
        public int iIcon;
        public uint dwAttributes;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
        public string szDisplayName;
       
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
public string szTypeName;
}

    private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
    {
        // Save the current directory and view mode to settings
        Properties.Settings.Default.currentDirectory = currentDirectory;
        Properties.Settings.Default.viewMode = (int)viewMode;
        Properties.Settings.Default.Save();
    }

    private void listView_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter)
        {
            // Open the selected file or directory
            listView_MouseDoubleClick(null, null);
        }
        else if (e.KeyCode == Keys.Back)
        {
            // Go up one level
            GoUpOneLevel();
        }
    }

    private void treeView_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter)
        {
            // Expand or collapse the selected node
            treeView.SelectedNode.Toggle();
        }
        else if (e.KeyCode == Keys.Back)
        {
            // Go up one level
            GoUpOneLevel();
        }
    }

    private void GoUpOneLevel()
    {
        string parentDirectory = Path.GetDirectoryName(currentDirectory);
        if (parentDirectory != null)
        {
            SetCurrentDirectory(parentDirectory);
        }
    }

    private void SetCurrentDirectory(string parentDirectory)
    {
        throw new NotImplementedException();
    }

    private void listView_DragDrop(object sender, DragEventArgs e)
    {
        string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
        if (files != null)
        {
            foreach (string file in files)
            {
                if (Directory.Exists(file))
                {
                    // Copy the directory
                    string destDir = Path.Combine(currentDirectory, Path.GetFileName(file));
                    CopyDirectory(file, destDir);
                }
                else if (File.Exists(file))
                {
                    // Copy the file
                    string destFile = Path.Combine(currentDirectory, Path.GetFileName(file));
                    File.Copy(file, destFile);
                }
            }
            PopulateListView(currentDirectory);
        }
    }

    private void PopulateListView(string currentDirectory)
    {
        throw new NotImplementedException();
    }

    private void CopyDirectory(string file, string destDir)
    {
        throw new NotImplementedException();
    }

    private void listView_DragEnter(object sender, DragEventArgs e)
    {
        if (e.Data.GetDataPresent(DataFormats.FileDrop))
        {
            e.Effect = DragDropEffects.Copy;
        }
        else
        {
            e.Effect = DragDropEffects.None;
        }
    }

    private void treeView_AfterSelect(object sender, TreeViewEventArgs e)
    {
        SetCurrentDirectory(e.Node.Tag as string);
    }

    /*private void viewModeToolStripComboBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        switch (viewModeToolStripComboBox.SelectedIndex)
        {
            case 0:
                viewMode = ViewMode.Details;
                break;
            case 1:
                viewMode = ViewMode.LargeIcons;
                break;
            case 2:
                viewMode = ViewMode.SmallIcons;
                break;
            case 3:
                viewMode = ViewMode.List;
                break;
            case 4:
                viewMode = ViewMode.Tile;
                break;
        }
        PopulateListView(currentDirectory);
    }*/

    private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
    {
        AboutForm aboutForm = new AboutForm();
        aboutForm.ShowDialog();
    }

    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.treeView1 = new System.Windows.Forms.TreeView();
        this.splitContainer1 = new System.Windows.Forms.SplitContainer();
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.button1 = new System.Windows.Forms.Button();
        this.button2 = new System.Windows.Forms.Button();
        this.menuStrip1 = new System.Windows.Forms.MenuStrip();
        this.contextMenuStrip1 = new System.Windows.Forms.ContextMenuStrip(this.components);
        this.webBrowser1 = new System.Windows.Forms.WebBrowser();
        ((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).BeginInit();
        this.splitContainer1.Panel1.SuspendLayout();
        this.splitContainer1.Panel2.SuspendLayout();
        this.splitContainer1.SuspendLayout();
        this.SuspendLayout();
        // 
        // treeView1
        // 
        this.treeView1.Location = new System.Drawing.Point(0, 0);
        this.treeView1.Name = "treeView1";
        this.treeView1.Size = new System.Drawing.Size(181, 264);
        this.treeView1.TabIndex = 0;
        // 
        // splitContainer1
        // 
        this.splitContainer1.Location = new System.Drawing.Point(0, 55);
        this.splitContainer1.Name = "splitContainer1";
        // 
        // splitContainer1.Panel1
        // 
        this.splitContainer1.Panel1.Controls.Add(this.treeView1);
        // 
        // splitContainer1.Panel2
        // 
        this.splitContainer1.Panel2.Controls.Add(this.webBrowser1);
        this.splitContainer1.Size = new System.Drawing.Size(697, 270);
        this.splitContainer1.SplitterDistance = 184;
        this.splitContainer1.TabIndex = 1;
        // 
        // textBox1
        // 
        this.textBox1.Location = new System.Drawing.Point(67, 28);
        this.textBox1.Name = "textBox1";
        this.textBox1.Size = new System.Drawing.Size(579, 20);
        this.textBox1.TabIndex = 2;
        // 
        // button1
        // 
        this.button1.Location = new System.Drawing.Point(3, 27);
        this.button1.Name = "button1";
        this.button1.Size = new System.Drawing.Size(27, 23);
        this.button1.TabIndex = 3;
        this.button1.Text = "button1";
        this.button1.UseVisualStyleBackColor = true;
        // 
        // button2
        // 
        this.button2.Location = new System.Drawing.Point(36, 26);
        this.button2.Name = "button2";
        this.button2.Size = new System.Drawing.Size(25, 23);
        this.button2.TabIndex = 4;
        this.button2.Text = "button2";
        this.button2.UseVisualStyleBackColor = true;
        // 
        // menuStrip1
        // 
        this.menuStrip1.Location = new System.Drawing.Point(0, 0);
        this.menuStrip1.Name = "menuStrip1";
        this.menuStrip1.Size = new System.Drawing.Size(694, 24);
        this.menuStrip1.TabIndex = 5;
        this.menuStrip1.Text = "menuStrip1";
        // 
        // contextMenuStrip1
        // 
        this.contextMenuStrip1.Name = "contextMenuStrip1";
        this.contextMenuStrip1.Size = new System.Drawing.Size(61, 4);
        // 
        // webBrowser1
        // 
        this.webBrowser1.Dock = System.Windows.Forms.DockStyle.Fill;
        this.webBrowser1.Location = new System.Drawing.Point(0, 0);
        this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 20);
        this.webBrowser1.Name = "webBrowser1";
        this.webBrowser1.Size = new System.Drawing.Size(509, 270);
        this.webBrowser1.TabIndex = 0;
        // 
        // MainForm
        // 
        this.ClientSize = new System.Drawing.Size(694, 319);
        this.Controls.Add(this.button2);
        this.Controls.Add(this.button1);
        this.Controls.Add(this.textBox1);
        this.Controls.Add(this.splitContainer1);
        this.Controls.Add(this.menuStrip1);
        this.MainMenuStrip = this.menuStrip1;
        this.Name = "MainForm";
        this.splitContainer1.Panel1.ResumeLayout(false);
        this.splitContainer1.Panel2.ResumeLayout(false);
        ((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).EndInit();
        this.splitContainer1.ResumeLayout(false);
        this.ResumeLayout(false);
        this.PerformLayout();

    }

    public uint ILD_TRANSPARENT { get; set; }

    public string currentDirectory { get; set; }

    public int viewMode { get; set; }
    }
}