Low Level Keyboard Listener in C#

Modified version of Low Level Keyboard Listener from this article: https://www.dylansweb.com/2014/10/low-level-global-keyboard-hook-sink-in-c-net/
I added OnKeyUp listener and rename the OnKeyPressed listener into OnKeyDown

LowLevelKeyboardListener.cs

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Input;

namespace MyNamespace
{
    public class LowLevelKeyboardListener
    {
        private const int WH_KEYBOARD_LL = 13;
        private const int WM_KEYDOWN = 0x0100;
        private const int WM_KEYUP = 0x0101;
        private const int WM_SYSKEYDOWN = 0x0104;
        private const int WM_SYSKEYUP = 0x0105;

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);

        public delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);

        public event EventHandler<KeyDownArgs> OnKeyDown;
        public event EventHandler<KeyUpArgs> OnKeyUp;

        private LowLevelKeyboardProc _proc;
        private IntPtr _hookID = IntPtr.Zero;

        public LowLevelKeyboardListener()
        {
            _proc = HookCallback;
        }

        public void HookKeyboard()
        {
            _hookID = SetHook(_proc);
        }

        public void UnHookKeyboard()
        {
            UnhookWindowsHookEx(_hookID);
        }

        private IntPtr SetHook(LowLevelKeyboardProc proc)
        {
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
                return SetWindowsHookEx(WH_KEYBOARD_LL, proc, GetModuleHandle(curModule.ModuleName), 0);
            }
        }

        private IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
        {
            if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN || wParam == (IntPtr)WM_SYSKEYDOWN)
            {
                int vkCode = Marshal.ReadInt32(lParam);

                if (OnKeyDown != null) { OnKeyDown(this, new KeyDownArgs(KeyInterop.KeyFromVirtualKey(vkCode))); }
            }

            //Could be an else if, idk never tried it, lol
            if (nCode >= 0 && wParam == (IntPtr)WM_KEYUP || wParam == (IntPtr)WM_SYSKEYUP)
            {
                int vkCode = Marshal.ReadInt32(lParam);

                if (OnKeyUp != null) { OnKeyUp(this, new KeyUpArgs(KeyInterop.KeyFromVirtualKey(vkCode))); }
            }

            return CallNextHookEx(_hookID, nCode, wParam, lParam);
        }
    }

    public class KeyDownArgs : EventArgs
    {
        public Key KeyDown { get; private set; }

        public KeyDownArgs(Key key)
        {
            KeyDown = key;
        }
    }

    public class KeyUpArgs : EventArgs
    {
        public Key KeyUp { get; private set; }

        public KeyUpArgs(Key key)
        {
            KeyUp = key;
        }
    }
}

Form1.cs

using System;
using System.Windows.Forms;

namespace MyNamespace
{
    public partial class Form1 : Form
    {
        private LowLevelKeyboardListener _listener;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            _listener = new LowLevelKeyboardListener();
            _listener.OnKeyDown += _listener_OnKeyDown;
            _listener.OnKeyUp += _listener_OnKeyUp;

            _listener.HookKeyboard();
        }

        private void _listener_OnKeyDown(object sender, KeyDownArgs e)
        {
            Console.WriteLine("Key Down: " + e.KeyDown);
        }

        private void _listener_OnKeyUp(object sender, KeyUpArgs e)
        {
            Console.WriteLine("Key Up: " + e.KeyUp);
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            _listener.UnHookKeyboard();
        }
    }
}