Restore Classic File Explorer with Ribbon in Windows 11

using System;
using System.Diagnostics;
using System.IO;
using System.Management;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Automation;
using System.Windows.Forms;

class Program
{
    private static string Folder = "";
    private static IntPtr fld;
    private static uint psfgaoOut;

    private static void OnWindowOpened(object src, AutomationEventArgs e)
    {
        try
        {
            var elem = src as AutomationElement;
            Process proc = Process.GetProcessById(elem.Current.ProcessId);
            if (elem != null && GetCommandLine(proc.Id).Equals(
                "C:\\WINDOWS\\explorer.exe /factory,{5BD95610-9434-43c2-886c-57852CC8A120} -Embedding", StringComparison.OrdinalIgnoreCase))
            {
                WindowPattern windowPattern = null;
                windowPattern = elem.GetCurrentPattern(WindowPattern.Pattern) as WindowPattern;
                if (windowPattern.WaitForInputIdle(4000))
                {
                    Thread.Sleep(200);
                    SetForegroundWindow((IntPtr)elem.Current.NativeWindowHandle);
                    Thread.Sleep(250);
                    if (Folder != "")
                    {
                        if (fld != IntPtr.Zero)
                        {
                            SendKeys.SendWait("^{l}\\{Enter}");
                            SHOpenFolderAndSelectItems(fld, 0, new IntPtr[] {}, 0);
                            SendKeys.SendWait("{Enter}");
                            if (Folder.ToLower().StartsWith("c:\\users\\"))
                            {
                                Thread.Sleep(250);
                                SendMessage((IntPtr)elem.Current.NativeWindowHandle, 0x0010, IntPtr.Zero, IntPtr.Zero);
                            }
                        }
                        else
                        {
                            SendKeys.SendWait("^{l}" + Folder + "{Enter}");
                        }
                    }
                    else
                    {
                        SendKeys.SendWait("^{l}\\{Enter}");
                    }
                }
            }
        }
        catch
        {
            Process.GetCurrentProcess().Kill();
        }
    }

    static string GetCommandLine(int processId)
    {
        using (ManagementObjectSearcher mos = new ManagementObjectSearcher("SELECT CommandLine FROM Win32_Process WHERE ProcessId = " + processId))
        using (ManagementObjectCollection moc = mos.Get())
        {
            foreach (ManagementBaseObject mo in moc)
            {
                if (mo != null && mo["CommandLine"] != null)
                {
                    return mo["CommandLine"].ToString();
                }
            }
        }
        return null;
    }

    [STAThread]
    static void Main(string[] args)
    {
        if (args.Length > 0)
        {
            Folder = args[0].TrimEnd(new [] {'\\', '\"'}).TrimStart(new [] {'\"'});
            if (Folder.EndsWith(":"))
            {
                Folder = Folder + "\\";
            }

            try
            {
                if (new DirectoryInfo(Folder).Parent != null)
                {
                    SHParseDisplayName(Path.GetFullPath(Folder), IntPtr.Zero, out fld, 0, out psfgaoOut);
                    if (fld == IntPtr.Zero)
                    {
                        Process.GetCurrentProcess().Kill();
                    }
                }
            }
            catch
            {
            }
        }

        System.Windows.Automation.Automation.AddAutomationEventHandler(
            WindowPattern.WindowOpenedEvent,
            AutomationElement.RootElement,
            TreeScope.Children,
            OnWindowOpened);

        ProcessStartInfo startInfo = new ProcessStartInfo
        {
            FileName = "control.exe",
            Arguments = "admintools",
            RedirectStandardOutput = false,
            RedirectStandardError = false,
            UseShellExecute = true,
            CreateNoWindow = false
        };

        Process process = new Process
        {
            StartInfo = startInfo
        };

        process.Start();

        // Wait
        Thread.Sleep(10000);
    }
    [DllImport("user32.dll")]
    private static extern bool SetForegroundWindow(IntPtr hWnd);

    [DllImport("shell32.dll")]
    private static extern int SHOpenFolderAndSelectItems(IntPtr pidlFolder, uint cidl, [MarshalAs(UnmanagedType.LPArray)] IntPtr[] apidl, uint dwFlags);

    [DllImport("shell32.dll")]
    private static extern void SHParseDisplayName([MarshalAs(UnmanagedType.LPWStr)] string name, IntPtr bindingContext, out IntPtr pidl, uint sfgaoIn, out uint psfgaoOut);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
}