C#: Get last in focus windows application by name and bring to the foreground

Set Last In Focus Window To Foreground | .cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace focusOrder
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            GetZOrder();
        }

        enum GetWindow_Cmd : uint
        {
            GW_HWNDFIRST = 0,
            GW_HWNDLAST = 1,
            GW_HWNDNEXT = 2,
            GW_HWNDPREV = 3,
            GW_OWNER = 4,
            GW_CHILD = 5,
            GW_ENABLEDPOPUP = 6
        }


        [DllImport("user32.dll", SetLastError = true)]
        static extern IntPtr GetWindow(IntPtr hWnd, GetWindow_Cmd uCmd);

        private IntPtr GetTopmostHwnd(List<IntPtr> hwnds)
        {
            var topmostHwnd = IntPtr.Zero;

            if (hwnds != null && hwnds.Count > 0)
            {
                var hwnd = hwnds[0];

                while (hwnd != IntPtr.Zero)
                {
                    if (hwnds.Contains(hwnd))
                    {
                        topmostHwnd = hwnd;
                    }

                    hwnd = GetWindow(hwnd, GetWindow_Cmd.GW_HWNDPREV);
                }
            }

            return topmostHwnd;
        }

        private List<IntPtr> GetProcsHandlesByName(string name = "")
        {
            List<IntPtr> hwdList = new List<IntPtr>();

            Process[] procs = Process.GetProcessesByName(name);
            foreach (Process p in procs)
            {
                IntPtr handle = p.MainWindowHandle;
                if (handle != IntPtr.Zero)
                {
                    hwdList.Add(handle);
                }
            }
            return hwdList;
        }

        [DllImport("user32.dll")]
        static extern bool SetForegroundWindow(IntPtr hWnd);

        private void GetZOrder()
        {

            IntPtr TopHandle = GetTopmostHwnd(GetProcsHandlesByName("notepad"));
            Console.WriteLine(TopHandle);

            // test
            SetForegroundWindow(TopHandle);            
        }
    }
}