برنامج يمنع المستخدم من استخدام الوندوز من غير ادخال كلمة السر

وجدت حل عن طريق برمجة window form not window store app

لكم جزيل الشكر

السلام عليكم.....

هذا مثال بسيط  عملته لاغلاق سطح المكتب......

لتطويره لاغلاق الشامل انت بحاجة الى Win32 AP

الكود

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Microsoft.Win32;
namespace LockDisktop_Project
{
    public partial class Form1 : Form
    {
        private bool status = false;
        public Form1()
        {
            InitializeComponent();
        }
        private void ChangeCtrlAltDelete(bool enable)
        {
            if (enable)
            {
                RegistryKey regkey;

                string subKey = @"Software\Microsoft\Windows\CurrentVersion\Policies\System";

                try
                {
                    regkey = Registry.CurrentUser.CreateSubKey(subKey);
                    regkey.SetValue("DisableTaskMgr", "1", RegistryValueKind.DWord);
                    regkey.SetValue("DisableChangePassword", "1", RegistryValueKind.DWord);
                    regkey.SetValue("DisableLockWorkstation", "1", RegistryValueKind.DWord);
                    regkey.Close();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.ToString());
                }
            }
            else
            {
                try
                {
                    string subKey = @"Software\Microsoft\Windows\CurrentVersion\Policies\System";
                    RegistryKey regkey = Registry.CurrentUser;
                    RegistryKey sk = regkey.OpenSubKey(subKey);
                    if (sk != null)
                        regkey.DeleteSubKeyTree(subKey);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.ToString());
                }
            }
        }
        private void buttonLock_Click(object sender, EventArgs e)
        {
            this.WindowState = FormWindowState.Maximized;
            ChangeCtrlAltDelete(true);
            status = true;
        }

        private void buttonUnlock_Click(object sender, EventArgs e)
        {
            if (textBoxPassword.Text.Trim().Length == 0 | textBoxPassword.Text != "123")
            {
                MessageBox.Show("Enter Correct Password", "Warnning", MessageBoxButtons.OK, MessageBoxIcon.Error);
                textBoxPassword.Focus();
                return;
            }
            this.WindowState = FormWindowState.Normal;
            ChangeCtrlAltDelete(false);
            textBoxPassword.Clear();
            status = false;

        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            e.Cancel = status;
        }

        private void buttonClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Activate();
        }

    }
}

LockDisktop-Project.rar